970 ZIP Codes
| Zip Code | City | County | Population ↓ |
|---|---|---|---|
| 50023 | Ankeny | Polk County | 46,306 |
| 50613 | Cedar Falls | Black Hawk County | 43,867 |
| 52001 | Dubuque | Dubuque County | 43,101 |
| 52404 | Cedar Rapids | Linn County | 42,958 |
| 52402 | Cedar Rapids | Linn County | 42,938 |
| 52302 | Marion | Linn County | 42,706 |
| 52722 | Bettendorf | Scott County | 41,264 |
| 51503 | Council Bluffs | Pottawattamie County | 37,972 |
| 50266 | West Des Moines | Dallas County | 37,523 |
| 50317 | Des Moines | Polk County | 36,548 |
| 52240 | Iowa City | Johnson County | 35,074 |
| 50315 | Des Moines | Polk County | 34,816 |
| 51501 | Council Bluffs | Pottawattamie County | 34,618 |
| 50010 | Ames | Story County | 33,799 |
| 50265 | West Des Moines | Polk County | 33,488 |
| 50014 | Ames | Story County | 32,958 |
| 50322 | Urbandale | Polk County | 31,931 |
| 50158 | Marshalltown | Marshall County | 31,396 |
| 50310 | Des Moines | Polk County | 31,177 |
| 52501 | Ottumwa | Wapello County | 30,371 |
| 50021 | Ankeny | Polk County | 30,283 |
| 50701 | Waterloo | Black Hawk County | 30,232 |
| 50263 | Waukee | Dallas County | 29,611 |
| 52761 | Muscatine | Muscatine County | 29,474 |
| 50501 | Fort Dodge | Webster County | 28,823 |
| 50401 | Mason City | Cerro Gordo County | 28,703 |
| 51106 | Sioux City | Woodbury County | 28,592 |
| 52601 | Burlington | Des Moines County | 27,341 |
| 52806 | Davenport | Scott County | 26,871 |
| 52804 | Davenport | Scott County | 26,835 |
| 52405 | Cedar Rapids | Linn County | 26,526 |
| 52732 | Clinton | Clinton County | 25,880 |
| 50320 | Des Moines | Polk County | 24,807 |
| 50131 | Johnston | Polk County | 24,583 |
| 52241 | Coralville | Johnson County | 23,250 |
| 51104 | Sioux City | Woodbury County | 23,197 |
| 52317 | North Liberty | Johnson County | 23,097 |
| 50009 | Altoona | Polk County | 22,886 |
| 52245 | Iowa City | Johnson County | 22,853 |
| 52803 | Davenport | Scott County | 22,742 |
| 52403 | Cedar Rapids | Linn County | 22,551 |
| 52246 | Iowa City | Johnson County | 22,308 |
| 50702 | Waterloo | Black Hawk County | 20,882 |
| 50208 | Newton | Jasper County | 20,595 |
| 50125 | Indianola | Warren County | 20,121 |
| 50325 | Clive | Polk County | 19,012 |
| 50703 | Waterloo | Black Hawk County | 17,952 |
| 50313 | Des Moines | Polk County | 17,440 |
| 50323 | Urbandale | Dallas County | 17,265 |
| 52002 | Dubuque | Dubuque County | 17,005 |
| 51103 | Sioux City | Woodbury County | 16,895 |
| 50111 | Grimes | Polk County | 16,865 |
| 50211 | Norwalk | Warren County | 16,835 |
| 50316 | Des Moines | Polk County | 16,710 |
| 50036 | Boone | Boone County | 16,154 |
| 50312 | Des Moines | Polk County | 15,802 |
| 52807 | Davenport | Scott County | 15,617 |
| 52577 | Oskaloosa | Mahaska County | 14,585 |
| 50311 | Des Moines | Polk County | 14,574 |
| 50219 | Pella | Marion County | 14,416 |
| 52003 | Dubuque | Dubuque County | 13,796 |
| 50588 | Storm Lake | Buena Vista County | 13,431 |
| 50327 | Pleasant Hill | Polk County | 13,177 |
| 51031 | Le Mars | Plymouth County | 12,808 |
| 52101 | Decorah | Winneshiek County | 12,706 |
| 52627 | Fort Madison | Lee County | 12,677 |
| 50677 | Waverly | Bremer County | 12,673 |
| 51301 | Spencer | Clay County | 12,638 |
| 52641 | Mount Pleasant | Henry County | 12,428 |
| 51401 | Carroll | Carroll County | 11,990 |
| 50112 | Grinnell | Poweshiek County | 11,862 |
| 52632 | Keokuk | Lee County | 11,711 |
| 52556 | Fairfield | Jefferson County | 11,448 |
| 50138 | Knoxville | Marion County | 11,117 |
| 50314 | Des Moines | Polk County | 10,438 |
| 51105 | Sioux City | Woodbury County | 10,415 |
| 50035 | Bondurant | Polk County | 10,131 |
| 50309 | Des Moines | Polk County | 10,110 |
| 51250 | Sioux Center | Sioux County | 9,970 |
| 50003 | Adel | Dallas County | 9,948 |
| 51442 | Denison | Crawford County | 9,692 |
| 52748 | Eldridge | Scott County | 9,594 |
| 52802 | Davenport | Scott County | 9,466 |
| 50616 | Charles City | Floyd County | 9,358 |
| 52353 | Washington | Washington County | 9,241 |
| 50220 | Perry | Dallas County | 9,216 |
| 50428 | Clear Lake | Cerro Gordo County | 9,071 |
| 50801 | Creston | Union County | 9,034 |
| 50273 | Winterset | Madison County | 8,950 |
| 50595 | Webster City | Hamilton County | 8,885 |
| 51534 | Glenwood | Mills County | 8,874 |
| 51360 | Spirit Lake | Dickinson County | 8,653 |
| 52205 | Anamosa | Jones County | 8,627 |
| 50022 | Atlantic | Cass County | 8,526 |
| 50644 | Independence | Buchanan County | 8,419 |
| 52411 | Cedar Rapids | Linn County | 8,342 |
| 50201 | Nevada | Story County | 8,320 |
| 52057 | Manchester | Delaware County | 8,193 |
| 52544 | Centerville | Appanoose County | 8,121 |
| 52060 | Maquoketa | Jackson County | 8,007 |
| 50321 | Des Moines | Polk County | 7,900 |
| 50707 | Evansdale | Black Hawk County | 7,784 |
| 50226 | Polk City | Polk County | 7,759 |
| 52349 | Vinton | Benton County | 7,737 |
| 50213 | Osceola | Clarke County | 7,489 |
| 51041 | Orange City | Sioux County | 7,324 |
| 52333 | Solon | Johnson County | 7,295 |
| 52742 | De Witt | Clinton County | 7,284 |
| 50511 | Algona | Kossuth County | 7,240 |
| 52537 | Bloomfield | Davis County | 7,069 |
| 51566 | Red Oak | Montgomery County | 7,010 |
| 52233 | Hiawatha | Linn County | 7,000 |
| 51334 | Estherville | Emmet County | 6,960 |
| 50047 | Carlisle | Warren County | 6,690 |
| 51632 | Clarinda | Page County | 6,624 |
| 50662 | Oelwein | Fayette County | 6,576 |
| 52310 | Monticello | Jones County | 6,450 |
| 51201 | Sheldon | Sioux County | 6,430 |
| 50049 | Chariton | Lucas County | 6,414 |
| 51537 | Harlan | Shelby County | 6,382 |
| 50126 | Iowa Falls | Hardin County | 6,368 |
| 51012 | Cherokee | Cherokee County | 6,311 |
| 52314 | Mount Vernon | Linn County | 6,200 |
| 52340 | Tiffin | Johnson County | 6,128 |
| 52531 | Albia | Monroe County | 6,036 |
| 52753 | Le Claire | Scott County | 6,020 |
| 51108 | Sioux City | Plymouth County | 5,960 |
| 52247 | Kalona | Johnson County | 5,914 |
| 52172 | Waukon | Allamakee County | 5,877 |
| 52136 | Cresco | Howard County | 5,840 |
| 50436 | Forest City | Winnebago County | 5,771 |
| 50548 | Humboldt | Humboldt County | 5,722 |
| 50659 | New Hampton | Chickasaw County | 5,688 |
| 51601 | Shenandoah | Page County | 5,629 |
| 52040 | Dyersville | Delaware County | 5,584 |
| 51054 | Sergeant Bluff | Woodbury County | 5,583 |
| 50441 | Hampton | Franklin County | 5,450 |
| 52031 | Bellevue | Jackson County | 5,403 |
| 52772 | Tipton | Cedar County | 5,348 |
| 52068 | Peosta | Dubuque County | 5,280 |
| 50461 | Osage | Mitchell County | 5,228 |
| 52726 | Blue Grass | Scott County | 5,160 |
| 50324 | Windsor Heights | Polk County | 5,143 |
| 51247 | Rock Valley | Sioux County | 5,094 |
| 52776 | West Liberty | Muscatine County | 5,090 |
| 50129 | Jefferson | Greene County | 5,014 |
| 51351 | Milford | Dickinson County | 4,988 |
| 51555 | Missouri Valley | Harrison County | 4,952 |
| 50124 | Huxley | Story County | 4,859 |
| 52730 | Camanche | Clinton County | 4,776 |
| 52242 | Iowa City | Johnson County | 4,688 |
| 52361 | Williamsburg | Iowa County | 4,582 |
| 50156 | Madrid | Boone County | 4,575 |
| 52339 | Tama | Tama County | 4,326 |
| 52655 | West Burlington | Des Moines County | 4,322 |
| 50648 | Jesup | Black Hawk County | 4,269 |
| 50248 | Story City | Story County | 4,216 |
| 50013 | Ames | Story County | 4,211 |
| 50536 | Emmetsburg | Palo Alto County | 4,207 |
| 52213 | Center Point | Linn County | 4,114 |
| 51246 | Rock Rapids | Lyon County | 4,041 |
| 52301 | Marengo | Iowa County | 4,028 |
| 50438 | Garner | Hancock County | 3,995 |
| 50533 | Eagle Grove | Wright County | 3,977 |
| 52338 | Swisher | Johnson County | 3,934 |
| 52228 | Fairfax | Linn County | 3,802 |
| 52327 | Riverside | Washington County | 3,796 |
| 51510 | Carter Lake | Pottawattamie County | 3,767 |
| 52162 | Postville | Allamakee County | 3,744 |
| 50169 | Mitchellville | Polk County | 3,667 |
| 50237 | Runnells | Polk County | 3,635 |
| 52778 | Wilton | Cedar County | 3,632 |
| 51109 | Sioux City | Plymouth County | 3,606 |
| 52358 | West Branch | Cedar County | 3,598 |
| 51249 | Sibley | Osceola County | 3,564 |
| 50622 | Denver | Bremer County | 3,549 |
| 52645 | New London | Henry County | 3,503 |
| 51040 | Onawa | Monona County | 3,500 |
| 52175 | West Union | Fayette County | 3,484 |
| 51023 | Hawarden | Sioux County | 3,473 |
| 50674 | Sumner | Bremer County | 3,446 |
| 50638 | Grundy Center | Grundy County | 3,441 |
| 50261 | Van Meter | Madison County | 3,399 |
| 52738 | Columbus Junction | Louisa County | 3,398 |
| 50225 | Pleasantville | Marion County | 3,364 |
| 50109 | Granger | Polk County | 3,309 |
| 52033 | Cascade | Jones County | 3,292 |
| 50627 | Eldora | Hardin County | 3,276 |
| 50525 | Clarion | Wright County | 3,179 |
| 50421 | Belmond | Wright County | 3,168 |
| 50054 | Colfax | Jasper County | 3,166 |
| 50025 | Audubon | Audubon County | 3,148 |
| 50651 | La Porte City | Black Hawk County | 3,147 |
| 52046 | Farley | Dubuque County | 3,129 |
| 51546 | Logan | Harrison County | 3,114 |
| 52653 | Wapello | Louisa County | 3,083 |
| 50459 | Northwood | Worth County | 3,045 |
| 52637 | Mediapolis | Des Moines County | 3,041 |
| 50579 | Rockwell City | Calhoun County | 3,034 |
| 50643 | Hudson | Black Hawk County | 3,027 |
| 50170 | Monroe | Jasper County | 3,024 |
| 52052 | Guttenberg | Clayton County | 2,999 |
| 52227 | Ely | Linn County | 2,996 |
| 50212 | Ogden | Boone County | 2,993 |
| 50072 | Earlham | Madison County | 2,979 |
| 51050 | Remsen | Plymouth County | 2,962 |
| 50450 | Lake Mills | Winnebago County | 2,952 |
| 52208 | Belle Plaine | Benton County | 2,877 |
| 51239 | Hull | Sioux County | 2,876 |
| 51039 | Moville | Woodbury County | 2,845 |
| 50140 | Lamoni | Decatur County | 2,842 |
| 50250 | Stuart | Adair County | 2,832 |
| 50115 | Guthrie Center | Guthrie County | 2,809 |
| 52211 | Brooklyn | Poweshiek County | 2,795 |
| 51002 | Alta | Buena Vista County | 2,787 |
| 50216 | Panora | Guthrie County | 2,786 |
| 52045 | Epworth | Dubuque County | 2,777 |
| 52214 | Central City | Linn County | 2,761 |
| 52591 | Sigourney | Keokuk County | 2,721 |
| 50063 | Dallas Center | Dallas County | 2,720 |
| 52328 | Robins | Linn County | 2,712 |
| 52342 | Toledo | Tama County | 2,705 |
| 50665 | Parkersburg | Butler County | 2,693 |
| 50144 | Leon | Decatur County | 2,692 |
| 50276 | Woodward | Boone County | 2,679 |
| 52356 | Wellman | Washington County | 2,664 |
| 52253 | Lisbon | Cedar County | 2,622 |
| 52206 | Atkins | Benton County | 2,564 |
| 50472 | Saint Ansgar | Mitchell County | 2,560 |
| 50171 | Montezuma | Poweshiek County | 2,524 |
| 50563 | Manson | Calhoun County | 2,505 |
| 51445 | Ida Grove | Ida County | 2,485 |
| 50658 | Nashua | Chickasaw County | 2,450 |
| 50669 | Reinbeck | Grundy County | 2,439 |
| 50060 | Corydon | Wayne County | 2,417 |
| 52159 | Monona | Allamakee County | 2,398 |
| 52336 | Springville | Linn County | 2,397 |
| 50240 | Saint Charles | Madison County | 2,393 |
| 50854 | Mount Ayr | Ringgold County | 2,391 |
| 52773 | Walcott | Scott County | 2,389 |
| 50849 | Greenfield | Adair County | 2,374 |
| 51001 | Akron | Plymouth County | 2,342 |
| 50841 | Corning | Adams County | 2,340 |
| 52625 | Donnellson | Lee County | 2,338 |
| 50207 | New Sharon | Mahaska County | 2,325 |
| 50601 | Ackley | Franklin County | 2,299 |
| 50161 | Maxwell | Polk County | 2,296 |
| 50423 | Britt | Hancock County | 2,291 |
| 50583 | Sac City | Sac County | 2,288 |
| 51579 | Woodbine | Harrison County | 2,282 |
| 51455 | Manning | Carroll County | 2,279 |
| 50670 | Shell Rock | Butler County | 2,270 |
| 52322 | Oxford | Johnson County | 2,266 |
| 52076 | Strawberry Point | Clayton County | 2,258 |
| 51346 | Hartley | O'Brien County | 2,247 |
| 52203 | Amana | Iowa County | 2,231 |
| 52324 | Palo | Linn County | 2,216 |
| 50675 | Traer | Tama County | 2,198 |
| 50851 | Lenox | Taylor County | 2,193 |
| 51028 | Kingsley | Plymouth County | 2,191 |
| 50636 | Greene | Butler County | 2,186 |
| 52401 | Cedar Rapids | Linn County | 2,181 |
| 52747 | Durant | Muscatine County | 2,160 |
| 50619 | Clarksville | Butler County | 2,150 |
| 52224 | Dysart | Benton County | 2,141 |
| 50574 | Pocahontas | Pocahontas County | 2,132 |
| 50061 | Cumming | Madison County | 2,123 |
| 50228 | Prairie City | Jasper County | 2,120 |
| 51241 | Larchwood | Lyon County | 2,103 |
| 50458 | Nora Springs | Floyd County | 2,094 |
| 52755 | Lone Tree | Johnson County | 2,092 |
| 50629 | Fairbank | Buchanan County | 2,082 |
| 51024 | Hinton | Plymouth County | 2,081 |
| 50833 | Bedford | Taylor County | 2,077 |
| 52043 | Elkader | Clayton County | 2,058 |
| 50166 | Milo | Warren County | 2,023 |
| 50676 | Tripoli | Bremer County | 2,017 |
| 50247 | State Center | Marshall County | 2,004 |
| 50058 | Coon Rapids | Guthrie County | 1,999 |
| 52623 | Danville | Des Moines County | 1,982 |
| 52756 | Long Grove | Scott County | 1,982 |
| 50028 | Baxter | Jasper County | 1,981 |
| 50647 | Janesville | Bremer County | 1,978 |
| 50466 | Riceville | Howard County | 1,972 |
| 51521 | Avoca | Pottawattamie County | 1,953 |
| 50641 | Hazleton | Buchanan County | 1,950 |
| 51449 | Lake City | Calhoun County | 1,950 |
| 51003 | Alton | Sioux County | 1,938 |
| 51025 | Holstein | Ida County | 1,925 |
| 51240 | Inwood | Lyon County | 1,914 |
| 50012 | Ames | Story County | 1,913 |
| 52142 | Fayette | Fayette County | 1,890 |
| 52151 | Lansing | Allamakee County | 1,886 |
| 52654 | Wayland | Henry County | 1,884 |
| 50624 | Dike | Grundy County | 1,855 |
| 50830 | Afton | Union County | 1,846 |
| 52553 | Eddyville | Wapello County | 1,846 |
| 51551 | Malvern | Mills County | 1,842 |
| 51559 | Neola | Pottawattamie County | 1,841 |
| 52352 | Walker | Linn County | 1,833 |
| 52656 | West Point | Lee County | 1,833 |
| 52237 | Hopkinton | Delaware County | 1,830 |
| 52042 | Edgewood | Clayton County | 1,804 |
| 52801 | Davenport | Scott County | 1,788 |
| 51560 | Oakland | Pottawattamie County | 1,772 |
| 51576 | Underwood | Pottawattamie County | 1,769 |
| 50236 | Roland | Story County | 1,761 |
| 52132 | Calmar | Winneshiek County | 1,759 |
| 50135 | Kellogg | Jasper County | 1,754 |
| 52639 | Montrose | Lee County | 1,745 |
| 52069 | Preston | Jackson County | 1,743 |
| 51529 | Dunlap | Harrison County | 1,732 |
| 50244 | Slater | Polk County | 1,729 |
| 50456 | Manly | Worth County | 1,699 |
| 51535 | Griswold | Cass County | 1,697 |
| 50682 | Winthrop | Buchanan County | 1,692 |
| 52248 | Keota | Washington County | 1,675 |
| 51034 | Mapleton | Monona County | 1,674 |
| 51526 | Crescent | Pottawattamie County | 1,664 |
| 50864 | Villisca | Montgomery County | 1,662 |
| 52571 | Moravia | Appanoose County | 1,660 |
| 50554 | Laurens | Pocahontas County | 1,653 |
| 51443 | Glidden | Carroll County | 1,653 |
| 52306 | Mechanicsville | Cedar County | 1,642 |
| 51035 | Marcus | Cherokee County | 1,627 |
| 51450 | Lake View | Sac County | 1,619 |
| 50468 | Rockford | Floyd County | 1,617 |
| 52332 | Shellsburg | Benton County | 1,612 |
| 51575 | Treynor | Pottawattamie County | 1,609 |
| 52345 | Urbana | Benton County | 1,609 |
| 51237 | George | Lyon County | 1,605 |
| 52563 | Hedrick | Keokuk County | 1,602 |
| 50621 | Conrad | Grundy County | 1,601 |
| 52316 | North English | Iowa County | 1,597 |
| 50604 | Aplington | Butler County | 1,590 |
| 50229 | Prole | Warren County | 1,585 |
| 51652 | Sidney | Fremont County | 1,569 |
| 51005 | Aurelia | Cherokee County | 1,561 |
| 51577 | Walnut | Pottawattamie County | 1,561 |
| 50046 | Cambridge | Story County | 1,554 |
| 52216 | Clarence | Cedar County | 1,551 |
| 51248 | Sanborn | O'Brien County | 1,534 |
| 52754 | Letts | Muscatine County | 1,533 |
| 52161 | Ossian | Winneshiek County | 1,532 |
| 50469 | Rockwell | Cerro Gordo County | 1,527 |
| 52565 | Keosauqua | Van Buren County | 1,518 |
| 51238 | Hospers | Sioux County | 1,502 |
| 50002 | Adair | Guthrie County | 1,496 |
| 50105 | Gilbert | Story County | 1,487 |
| 50210 | New Virginia | Warren County | 1,487 |
| 51347 | Lake Park | Dickinson County | 1,470 |
| 50130 | Jewell | Hamilton County | 1,468 |
| 50626 | Dunkerton | Black Hawk County | 1,468 |
| 51030 | Lawton | Woodbury County | 1,468 |
| 52041 | Earlville | Delaware County | 1,468 |
| 52590 | Seymour | Wayne County | 1,464 |
| 52157 | McGregor | Clayton County | 1,451 |
| 51038 | Merrill | Plymouth County | 1,449 |
| 50475 | Sheffield | Franklin County | 1,446 |
| 51653 | Tabor | Fremont County | 1,446 |
| 50424 | Buffalo Center | Winnebago County | 1,441 |
| 50006 | Alden | Hardin County | 1,437 |
| 52320 | Olin | Jones County | 1,425 |
| 50628 | Elma | Howard County | 1,423 |
| 50635 | Gladbrook | Tama County | 1,423 |
| 50543 | Gowrie | Webster County | 1,420 |
| 52218 | Coggon | Linn County | 1,413 |
| 50233 | Redfield | Dallas County | 1,406 |
| 52777 | Wheatland | Clinton County | 1,389 |
| 52347 | Victor | Iowa County | 1,386 |
| 51342 | Graettinger | Palo Alto County | 1,385 |
| 50568 | Newell | Buena Vista County | 1,384 |
| 51640 | Hamburg | Fremont County | 1,381 |
| 52073 | Sherrill | Dubuque County | 1,381 |
| 52341 | Toddville | Linn County | 1,378 |
| 51245 | Primghar | O'Brien County | 1,377 |
| 50630 | Fredericksburg | Chickasaw County | 1,372 |
| 52049 | Garnavillo | Clayton County | 1,370 |
| 50251 | Sully | Jasper County | 1,365 |
| 52768 | Princeton | Scott County | 1,352 |
| 51055 | Sloan | Woodbury County | 1,346 |
| 50597 | West Bend | Palo Alto County | 1,341 |
| 52315 | Newhall | Benton County | 1,339 |
| 52035 | Colesburg | Clayton County | 1,331 |
| 52351 | Walford | Benton County | 1,329 |
| 52659 | Winfield | Henry County | 1,329 |
| 51046 | Paullina | O'Brien County | 1,326 |
| 52171 | Waucoma | Fayette County | 1,314 |
| 50249 | Stratford | Hamilton County | 1,312 |
| 52032 | Bernard | Dubuque County | 1,305 |
| 50076 | Exira | Audubon County | 1,301 |
| 50122 | Hubbard | Hardin County | 1,297 |
| 51458 | Odebolt | Sac County | 1,290 |
| 51006 | Battle Creek | Ida County | 1,287 |
| 51027 | Ireton | Sioux County | 1,280 |
| 50846 | Fontanelle | Adair County | 1,276 |
| 52640 | Morning Sun | Louisa County | 1,274 |
| 52202 | Alburnett | Linn County | 1,269 |
| 50174 | Murray | Clarke County | 1,259 |
| 52141 | Elgin | Fayette County | 1,259 |
| 51638 | Essex | Page County | 1,258 |
| 50602 | Allison | Butler County | 1,254 |
| 51454 | Manilla | Crawford County | 1,254 |
| 52746 | Donahue | Scott County | 1,240 |
| 50070 | Dexter | Madison County | 1,221 |
| 50668 | Readlyn | Bremer County | 1,216 |
| 51358 | Ruthven | Palo Alto County | 1,213 |
| 50073 | Elkhart | Polk County | 1,208 |
| 50632 | Garwin | Tama County | 1,201 |
| 52533 | Batavia | Jefferson County | 1,201 |
| 52223 | Delhi | Delaware County | 1,199 |
| 50535 | Early | Sac County | 1,198 |
| 50020 | Anita | Cass County | 1,197 |
| 50238 | Russell | Lucas County | 1,195 |
| 50645 | Ionia | Chickasaw County | 1,193 |
| 51234 | Boyden | Sioux County | 1,172 |
| 52037 | Delmar | Clinton County | 1,172 |
| 50162 | Melbourne | Marshall County | 1,164 |
| 50106 | Gilman | Marshall County | 1,163 |
| 52209 | Blairstown | Benton County | 1,158 |
| 52053 | Holy Cross | Dubuque County | 1,148 |
| 52201 | Ainsworth | Washington County | 1,148 |
| 50230 | Radcliffe | Hardin County | 1,145 |
| 50447 | Kanawha | Hancock County | 1,145 |
| 50660 | New Hartford | Butler County | 1,143 |
| 52570 | Milton | Van Buren County | 1,130 |
| 51570 | Shelby | Shelby County | 1,118 |
| 50514 | Armstrong | Emmet County | 1,117 |
| 52346 | Van Horne | Benton County | 1,113 |
| 52561 | Fremont | Mahaska County | 1,112 |
| 52155 | Lime Springs | Howard County | 1,110 |
| 50069 | De Soto | Dallas County | 1,109 |
| 52626 | Farmington | Lee County | 1,103 |
| 50055 | Collins | Story County | 1,102 |
| 52318 | Norway | Benton County | 1,099 |
| 52165 | Ridgeway | Winneshiek County | 1,098 |
| 51461 | Schleswig | Crawford County | 1,097 |
| 52620 | Bonaparte | Van Buren County | 1,097 |
| 51058 | Sutherland | O'Brien County | 1,096 |
| 50530 | Dayton | Webster County | 1,090 |
| 52540 | Brighton | Jefferson County | 1,088 |
| 50585 | Sioux Rapids | Buena Vista County | 1,080 |
| 51016 | Correctionville | Woodbury County | 1,080 |
| 52039 | Durango | Dubuque County | 1,079 |
| 52554 | Eldon | Wapello County | 1,078 |
| 52144 | Fort Atkinson | Winneshiek County | 1,075 |
| 51063 | Whiting | Monona County | 1,072 |
| 50541 | Gilmore City | Pocahontas County | 1,067 |
| 51525 | Carson | Pottawattamie County | 1,067 |
| 51430 | Arcadia | Carroll County | 1,063 |
| 52249 | Keystone | Benton County | 1,060 |
| 51052 | Salix | Woodbury County | 1,050 |
| 51462 | Scranton | Greene County | 1,049 |
| 52749 | Fruitland | Muscatine County | 1,049 |
| 51355 | Okoboji | Dickinson County | 1,048 |
| 51466 | Wall Lake | Sac County | 1,043 |
| 50510 | Albert City | Buena Vista County | 1,042 |
| 51561 | Pacific Junction | Mills County | 1,039 |
| 51101 | Sioux City | Woodbury County | 1,031 |
| 50680 | Wellsburg | Grundy County | 1,027 |
| 50139 | Lacona | Warren County | 1,025 |
| 51053 | Schaller | Sac County | 1,016 |
| 51235 | Doon | Lyon County | 1,007 |
| 52254 | Lost Nation | Clinton County | 1,004 |
| 50056 | Colo | Story County | 1,003 |
| 50540 | Fonda | Pocahontas County | 998 |
| 51553 | Minden | Pottawattamie County | 998 |
| 52079 | Zwingle | Jackson County | 995 |
| 52760 | Moscow | Muscatine County | 992 |
| 52070 | Sabula | Jackson County | 990 |
| 52728 | Buffalo | Scott County | 984 |
| 52255 | Lowden | Cedar County | 980 |
| 51573 | Stanton | Montgomery County | 979 |
| 52751 | Grand Mound | Clinton County | 976 |
| 52235 | Hills | Johnson County | 974 |
| 51354 | Ocheyedan | Osceola County | 965 |
| 52720 | Atalissa | Muscatine County | 964 |
| 51022 | Granville | O'Brien County | 960 |
| 52215 | Chelsea | Tama County | 960 |
| 50258 | Union | Hardin County | 958 |
| 52210 | Brandon | Buchanan County | 958 |
| 50452 | Latimer | Franklin County | 946 |
| 52530 | Agency | Wapello County | 945 |
| 52323 | Oxford Junction | Jones County | 942 |
| 52330 | Ryan | Delaware County | 940 |
| 52552 | Drakesville | Davis County | 940 |
| 51331 | Arnolds Park | Dickinson County | 935 |
| 50625 | Dumont | Butler County | 930 |
| 52658 | Wever | Lee County | 927 |
| 50118 | Hartford | Warren County | 920 |
| 51639 | Farragut | Fremont County | 919 |
| 50257 | Truro | Madison County | 914 |
| 52305 | Martelle | Jones County | 913 |
| 52649 | Salem | Henry County | 913 |
| 52147 | Hawkeye | Fayette County | 911 |
| 51026 | Hornick | Woodbury County | 910 |
| 51357 | Royal | Clay County | 910 |
| 50268 | What Cheer | Keokuk County | 908 |
| 51571 | Silver City | Mills County | 902 |
| 50044 | Bussey | Marion County | 901 |
| 50667 | Raymond | Black Hawk County | 899 |
| 50278 | Zearing | Story County | 891 |
| 50153 | Lynnville | Jasper County | 890 |
| 52635 | Lockridge | Jefferson County | 890 |
| 51531 | Elk Horn | Shelby County | 889 |
| 52729 | Calamus | Clinton County | 886 |
| 50123 | Humeston | Wayne County | 883 |
| 50149 | Lorimor | Madison County | 883 |
| 52078 | Worthington | Dubuque County | 870 |
| 52731 | Charlotte | Clinton County | 867 |
| 50542 | Goldfield | Wright County | 859 |
| 51004 | Anthon | Woodbury County | 858 |
| 51338 | Everly | Clay County | 852 |
| 50858 | Orient | Adair County | 848 |
| 50071 | Dows | Wright County | 847 |
| 51533 | Emerson | Montgomery County | 844 |
| 52572 | Moulton | Appanoose County | 844 |
| 52585 | Richland | Keokuk County | 838 |
| 52135 | Clermont | Fayette County | 834 |
| 50517 | Bancroft | Kossuth County | 833 |
| 50845 | Diagonal | Ringgold County | 831 |
| 51557 | Mondamin | Harrison County | 828 |
| 50168 | Mingo | Jasper County | 826 |
| 50598 | Whittemore | Kossuth County | 818 |
| 51439 | Charter Oak | Crawford County | 818 |
| 52160 | New Albin | Allamakee County | 818 |
| 52362 | Wyoming | Jones County | 816 |
| 51436 | Breda | Carroll County | 815 |
| 52536 | Blakesburg | Wapello County | 814 |
| 50005 | Albion | Marshall County | 812 |
| 50480 | Titonka | Kossuth County | 809 |
| 50581 | Rolfe | Pocahontas County | 809 |
| 51530 | Earling | Shelby County | 809 |
| 52721 | Bennett | Cedar County | 809 |
| 50075 | Ellsworth | Hamilton County | 807 |
| 50532 | Duncombe | Webster County | 804 |
| 50557 | Lehigh | Webster County | 804 |
| 50606 | Arlington | Fayette County | 803 |
| 51364 | Terril | Dickinson County | 803 |
| 51542 | Honey Creek | Pottawattamie County | 802 |
| 52650 | Sperry | Des Moines County | 799 |
| 52054 | La Motte | Jackson County | 794 |
| 51544 | Lewis | Cass County | 793 |
| 50062 | Melcher Dallas | Marion County | 789 |
| 52739 | Conesville | Louisa County | 788 |
| 50449 | Klemme | Hancock County | 785 |
| 52551 | Douds | Van Buren County | 782 |
| 50134 | Kelley | Story County | 770 |
| 52156 | Luana | Clayton County | 769 |
| 51646 | New Market | Taylor County | 767 |
| 50519 | Bode | Humboldt County | 765 |
| 50107 | Grand Junction | Greene County | 764 |
| 50634 | Gilbertville | Black Hawk County | 761 |
| 50666 | Plainfield | Bremer County | 753 |
| 50529 | Dakota City | Humboldt County | 752 |
| 52146 | Harpers Ferry | Allamakee County | 752 |
| 50482 | Ventura | Cerro Gordo County | 748 |
| 50471 | Rudd | Floyd County | 740 |
| 50655 | Maynard | Fayette County | 739 |
| 50478 | Thompson | Winnebago County | 737 |
| 50150 | Lovilia | Monroe County | 736 |
| 51243 | Little Rock | Lyon County | 735 |
| 52624 | Denmark | Lee County | 734 |
| 50560 | Lu Verne | Kossuth County | 732 |
| 52337 | Stanwood | Cedar County | 729 |
| 50151 | Lucas | Lucas County | 727 |
| 52535 | Birmingham | Van Buren County | 725 |
| 50008 | Allerton | Wayne County | 722 |
| 50142 | Le Grand | Marshall County | 720 |
| 50214 | Otley | Marion County | 719 |
| 50590 | Swea City | Kossuth County | 718 |
| 50853 | Massena | Cass County | 716 |
| 50435 | Floyd | Floyd County | 713 |
| 50050 | Churdan | Greene County | 712 |
| 52580 | Packwood | Jefferson County | 711 |
| 50032 | Berwick | Polk County | 707 |
| 50476 | Stacyville | Mitchell County | 706 |
| 51060 | Ute | Monona County | 706 |
| 50173 | Montour | Tama County | 705 |
| 50522 | Burt | Kossuth County | 705 |
| 52769 | Stockton | Scott County | 698 |
| 50575 | Pomeroy | Calhoun County | 696 |
| 50464 | Plymouth | Cerro Gordo County | 694 |
| 52326 | Quasqueton | Buchanan County | 694 |
| 51047 | Peterson | Clay County | 693 |
| 51007 | Bronson | Woodbury County | 691 |
| 50163 | Melcher Dallas | Marion County | 689 |
| 51465 | Vail | Crawford County | 689 |
| 50460 | Orchard | Mitchell County | 688 |
| 52064 | Miles | Jackson County | 685 |
| 52557 | Fairfield | Jefferson County | 685 |
| 50164 | Menlo | Guthrie County | 682 |
| 50523 | Callender | Webster County | 682 |
| 52229 | Garrison | Benton County | 678 |
| 52766 | Nichols | Muscatine County | 677 |
| 50859 | Prescott | Adams County | 676 |
| 52594 | Unionville | Appanoose County | 676 |
| 51528 | Dow City | Crawford County | 674 |
| 52133 | Castalia | Winneshiek County | 673 |
| 50483 | Wesley | Kossuth County | 672 |
| 52065 | New Vienna | Dubuque County | 671 |
| 52140 | Dorchester | Allamakee County | 671 |
| 52329 | Rowley | Buchanan County | 671 |
| 50538 | Farnhamville | Calhoun County | 661 |
| 51232 | Ashton | Osceola County | 658 |
| 50479 | Thornton | Cerro Gordo County | 655 |
| 52750 | Goose Lake | Clinton County | 654 |
| 50558 | Livermore | Humboldt County | 653 |
| 50001 | Ackworth | Warren County | 650 |
| 50650 | Lamont | Buchanan County | 648 |
| 51532 | Elliott | Montgomery County | 644 |
| 52335 | South English | Keokuk County | 644 |
| 50256 | Tracy | Marion County | 643 |
| 50578 | Ringsted | Emmet County | 633 |
| 51020 | Galva | Ida County | 632 |
| 52222 | Deep River | Poweshiek County | 631 |
| 51563 | Persia | Harrison County | 629 |
| 50448 | Kensett | Worth County | 620 |
| 50246 | Stanhope | Hamilton County | 614 |
| 51536 | Hancock | Pottawattamie County | 613 |
| 51448 | Kiron | Crawford County | 612 |
| 50672 | Steamboat Rock | Hardin County | 611 |
| 52621 | Crawfordsville | Washington County | 604 |
| 52212 | Center Junction | Jones County | 601 |
| 52586 | Rose Hill | Mahaska County | 600 |
| 51467 | Westside | Crawford County | 596 |
| 50167 | Minburn | Dallas County | 592 |
| 52154 | Lawler | Chickasaw County | 592 |
| 52542 | Cantril | Van Buren County | 588 |
| 50141 | Laurel | Marshall County | 587 |
| 50516 | Badger | Webster County | 586 |
| 50561 | Lytton | Calhoun County | 585 |
| 50277 | Yale | Guthrie County | 582 |
| 50271 | Williams | Hamilton County | 581 |
| 50146 | Linden | Dallas County | 577 |
| 50642 | Holland | Grundy County | 577 |
| 52217 | Clutier | Tama County | 573 |
| 50160 | Martensdale | Warren County | 569 |
| 50232 | Reasnor | Jasper County | 569 |
| 51433 | Auburn | Sac County | 567 |
| 50544 | Harcourt | Webster County | 565 |
| 52236 | Homestead | Iowa County | 564 |
| 50048 | Casey | Guthrie County | 562 |
| 51231 | Archer | O'Brien County | 562 |
| 50217 | Paton | Greene County | 561 |
| 50234 | Rhodes | Marshall County | 559 |
| 50603 | Alta Vista | Chickasaw County | 555 |
| 52170 | Waterville | Allamakee County | 555 |
| 50840 | Clearfield | Taylor County | 552 |
| 52550 | Delta | Keokuk County | 552 |
| 50569 | Otho | Webster County | 551 |
| 52569 | Melrose | Monroe County | 550 |
| 51014 | Cleghorn | Cherokee County | 549 |
| 51558 | Moorhead | Monona County | 549 |
| 52595 | University Park | Mahaska County | 545 |
| 52251 | Ladora | Iowa County | 544 |
| 51018 | Cushing | Ida County | 542 |
| 52543 | Cedar | Mahaska County | 541 |
| 50843 | Cumberland | Cass County | 540 |
| 52231 | Harper | Keokuk County | 539 |
| 50143 | Leighton | Mahaska County | 538 |
| 50453 | Leland | Winnebago County | 537 |
| 50133 | Kellerton | Ringgold County | 528 |
| 50029 | Bayard | Guthrie County | 523 |
| 50430 | Corwith | Hancock County | 520 |
| 51564 | Pisgah | Harrison County | 520 |
| 50065 | Davis City | Decatur County | 517 |
| 51565 | Portsmouth | Shelby County | 516 |
| 52638 | Middletown | Des Moines County | 508 |
| 50275 | Woodburn | Clarke County | 506 |
| 51562 | Panama | Shelby County | 506 |
| 52567 | Libertyville | Jefferson County | 506 |
| 51062 | Westfield | Plymouth County | 503 |
| 50264 | Weldon | Clarke County | 502 |
| 51453 | Lohrville | Calhoun County | 500 |
| 51446 | Irwin | Shelby County | 499 |
| 52549 | Cincinnati | Appanoose County | 487 |
| 50653 | Marble Rock | Floyd County | 486 |
| 50026 | Bagley | Guthrie County | 481 |
| 50681 | Westgate | Fayette County | 481 |
| 52313 | Mount Auburn | Benton County | 480 |
| 51230 | Alvord | Lyon County | 478 |
| 51543 | Kimballton | Audubon County | 478 |
| 52325 | Parnell | Iowa County | 477 |
| 50446 | Joice | Worth County | 476 |
| 50157 | Malcom | Poweshiek County | 473 |
| 50420 | Alexander | Franklin County | 473 |
| 51441 | Deloit | Crawford County | 468 |
| 50147 | Lineville | Wayne County | 463 |
| 50457 | Meservey | Hancock County | 463 |
| 52038 | Dundee | Delaware County | 463 |
| 52047 | Farmersburg | Clayton County | 462 |
| 52560 | Floris | Davis County | 458 |
| 51636 | Coin | Page County | 455 |
| 50439 | Goodell | Hancock County | 454 |
| 52072 | Saint Olaf | Clayton County | 454 |
| 50103 | Garden Grove | Decatur County | 453 |
| 51019 | Danbury | Woodbury County | 448 |
| 51049 | Quimby | Cherokee County | 448 |
| 51036 | Maurice | Sioux County | 445 |
| 50007 | Alleman | Polk County | 444 |
| 50539 | Fenton | Kossuth County | 444 |
| 52309 | Monmouth | Jackson County | 443 |
| 52745 | Dixon | Scott County | 443 |
| 52619 | Argyle | Lee County | 441 |
| 50524 | Clare | Webster County | 439 |
| 51048 | Pierson | Woodbury County | 435 |
| 50451 | Lakota | Kossuth County | 432 |
| 50235 | Rippey | Greene County | 431 |
| 51431 | Arthur | Ida County | 430 |
| 50120 | Haverhill | Marshall County | 428 |
| 50132 | Kamrar | Hamilton County | 427 |
| 52765 | New Liberty | Scott County | 427 |
| 51010 | Castana | Monona County | 425 |
| 50633 | Geneva | Franklin County | 423 |
| 52030 | Andrew | Jackson County | 423 |
| 52050 | Greeley | Delaware County | 422 |
| 51033 | Linn Grove | Clay County | 421 |
| 52354 | Watkins | Benton County | 420 |
| 52584 | Pulaski | Davis County | 420 |
| 51645 | Imogene | Fremont County | 419 |
| 51365 | Wallingford | Emmet County | 416 |
| 51548 | McClelland | Pottawattamie County | 415 |
| 52752 | Grandview | Louisa County | 413 |
| 51463 | Templeton | Carroll County | 412 |
| 50484 | Woden | Hancock County | 411 |
| 50599 | Woolstock | Wright County | 410 |
| 50148 | Liscomb | Marshall County | 406 |
| 50591 | Thor | Humboldt County | 405 |
| 50607 | Aurora | Buchanan County | 403 |
| 52651 | Stockport | Van Buren County | 398 |
| 52727 | Bryant | Clinton County | 398 |
| 50434 | Fertile | Worth County | 396 |
| 52321 | Onslow | Jones County | 395 |
| 50154 | McCallsburg | Story County | 394 |
| 50444 | Hanlontown | Worth County | 394 |
| 52644 | Mount Union | Henry County | 394 |
| 50119 | Harvey | Marion County | 392 |
| 51061 | Washta | Cherokee County | 389 |
| 52583 | Promise City | Wayne County | 389 |
| 52225 | Elberon | Tama County | 387 |
| 52767 | Pleasant Valley | Scott County | 386 |
| 51350 | Melvin | Osceola County | 383 |
| 50565 | Marathon | Buena Vista County | 380 |
| 51242 | Lester | Lyon County | 379 |
| 51523 | Blencoe | Monona County | 379 |
| 50562 | Mallard | Palo Alto County | 377 |
| 50609 | Beaman | Grundy County | 377 |
| 52574 | Mystic | Appanoose County | 377 |
| 50108 | Grand River | Decatur County | 376 |
| 50136 | Keswick | Keokuk County | 376 |
| 51333 | Dickens | Clay County | 374 |
| 51540 | Hastings | Mills County | 372 |
| 51572 | Soldier | Monona County | 371 |
| 52576 | Ollie | Keokuk County | 371 |
| 50612 | Buckingham | Tama County | 369 |
| 52169 | Wadena | Fayette County | 367 |
| 50528 | Cylinder | Palo Alto County | 366 |
| 50518 | Barnum | Webster County | 365 |
| 50611 | Bristow | Butler County | 364 |
| 51549 | Macedonia | Pottawattamie County | 363 |
| 51527 | Defiance | Shelby County | 362 |
| 50243 | Sheldahl | Polk County | 361 |
| 50440 | Grafton | Worth County | 361 |
| 50546 | Havelock | Pocahontas County | 356 |
| 52168 | Spillville | Winneshiek County | 356 |
| 50067 | Decatur | Decatur County | 354 |
| 50239 | Saint Anthony | Marshall County | 354 |
| 50206 | New Providence | Hardin County | 349 |
| 51345 | Harris | Osceola County | 347 |
| 50218 | Patterson | Madison County | 346 |
| 51056 | Smithland | Woodbury County | 346 |
| 51649 | Randolph | Fremont County | 346 |
| 50039 | Bouton | Dallas County | 344 |
| 50577 | Renwick | Humboldt County | 341 |
| 51440 | Dedham | Carroll County | 334 |
| 52163 | Protivin | Howard County | 333 |
| 52221 | Guernsey | Poweshiek County | 332 |
| 50128 | Jamaica | Guthrie County | 330 |
| 50034 | Blairsburg | Hamilton County | 328 |
| 50222 | Peru | Madison County | 328 |
| 50057 | Columbia | Marion County | 327 |
| 51037 | Meriden | Cherokee County | 327 |
| 50242 | Searsboro | Poweshiek County | 326 |
| 50531 | Dolliver | Emmet County | 325 |
| 50566 | Moorland | Webster County | 325 |
| 51654 | Thurman | Fremont County | 325 |
| 51631 | Braddyville | Page County | 324 |
| 52737 | Columbus City | Louisa County | 323 |
| 52534 | Beacon | Mahaska County | 321 |
| 52077 | Volga | Clayton County | 313 |
| 50861 | Shannon City | Union County | 311 |
| 52359 | West Chester | Washington County | 308 |
| 50836 | Blockton | Taylor County | 304 |
| 52758 | McCausland | Scott County | 298 |
| 52044 | Elkport | Clayton County | 297 |
| 50254 | Thayer | Union County | 296 |
| 51444 | Halbur | Carroll County | 290 |
| 52158 | Marquette | Clayton County | 290 |
| 50559 | Lone Rock | Kossuth County | 289 |
| 50594 | Vincent | Webster County | 288 |
| 50470 | Rowan | Wright County | 287 |
| 50432 | Crystal Lake | Hancock County | 283 |
| 52355 | Webster | Keokuk County | 283 |
| 50837 | Bridgewater | Adair County | 282 |
| 50567 | Nemaha | Sac County | 280 |
| 52660 | Yarmouth | Des Moines County | 279 |
| 50576 | Rembrandt | Buena Vista County | 277 |
| 52232 | Hartwick | Poweshiek County | 277 |
| 50654 | Masonville | Buchanan County | 275 |
| 50571 | Palmer | Pocahontas County | 273 |
| 51541 | Henderson | Mills County | 273 |
| 50586 | Somers | Calhoun County | 272 |
| 51545 | Little Sioux | Harrison County | 267 |
| 51556 | Modale | Harrison County | 266 |
| 52566 | Kirkville | Wapello County | 266 |
| 50262 | Van Wert | Decatur County | 263 |
| 50116 | Hamilton | Marion County | 261 |
| 51029 | Larrabee | Cherokee County | 261 |
| 51648 | Percival | Fremont County | 257 |
| 50848 | Gravity | Taylor County | 256 |
| 52207 | Baldwin | Jackson County | 256 |
| 52646 | Oakville | Des Moines County | 255 |
| 50515 | Ayrshire | Palo Alto County | 251 |
| 50477 | Swaledale | Cerro Gordo County | 250 |
| 50673 | Stout | Grundy County | 250 |
| 51366 | Webb | Clay County | 245 |
| 51520 | Arion | Crawford County | 243 |
| 52757 | Low Moor | Clinton County | 242 |
| 50223 | Pilot Mound | Boone County | 236 |
| 50252 | Swan | Marion County | 236 |
| 50038 | Booneville | Dallas County | 235 |
| 52630 | Hillsboro | Lee County | 235 |
| 50274 | Wiota | Cass County | 234 |
| 50454 | Little Cedar | Mitchell County | 229 |
| 52056 | Luxemburg | Dubuque County | 229 |
| 50431 | Coulter | Franklin County | 228 |
| 50042 | Brayton | Audubon County | 226 |
| 50631 | Frederika | Bremer County | 225 |
| 50051 | Clemons | Marshall County | 224 |
| 52134 | Chester | Howard County | 223 |
| 50473 | Scarville | Winnebago County | 219 |
| 52257 | Luzerne | Benton County | 216 |
| 50068 | Derby | Lucas County | 215 |
| 50074 | Ellston | Ringgold County | 215 |
| 51008 | Brunsville | Plymouth County | 210 |
| 50570 | Ottosen | Humboldt County | 203 |
| 50455 | McIntire | Mitchell County | 201 |
| 52048 | Garber | Clayton County | 201 |
| 52220 | Conroy | Iowa County | 199 |
| 51650 | Riverton | Fremont County | 197 |
| 50863 | Tingley | Ringgold County | 194 |
| 51554 | Mineola | Mills County | 194 |
| 52555 | Exline | Appanoose County | 193 |
| 50066 | Dawson | Dallas County | 191 |
| 50272 | Williamson | Lucas County | 190 |
| 50465 | Rake | Winnebago County | 190 |
| 50592 | Truesdale | Buena Vista County | 187 |
| 52164 | Randalia | Fayette County | 187 |
| 50671 | Stanley | Fayette County | 182 |
| 52334 | South Amana | Iowa County | 181 |
| 51452 | Lidderdale | Carroll County | 177 |
| 51343 | Greenville | Clay County | 172 |
| 51647 | Northboro | Page County | 172 |
| 51637 | College Springs | Page County | 171 |
| 50582 | Rutland | Humboldt County | 170 |
| 51550 | Magnolia | Harrison County | 169 |
| 51552 | Marne | Cass County | 169 |
| 50040 | Boxholm | Boone County | 168 |
| 52581 | Plano | Appanoose County | 168 |
| 52759 | Montpelier | Muscatine County | 167 |
| 51044 | Oto | Woodbury County | 165 |
| 50269 | Whitten | Hardin County | 164 |
| 51630 | Blanchard | Page County | 160 |
| 50556 | Ledyard | Kossuth County | 159 |
| 50433 | Dougherty | Cerro Gordo County | 157 |
| 50857 | Nodaway | Adams County | 156 |
| 50623 | Dewar | Black Hawk County | 153 |
| 50027 | Barnes City | Mahaska County | 148 |
| 52573 | Mount Sterling | Van Buren County | 148 |
| 51244 | Matlock | Sioux County | 144 |
| 52219 | Prairieburg | Linn County | 143 |
| 50231 | Randall | Hamilton County | 142 |
| 50145 | Liberty Center | Warren County | 139 |
| 50545 | Hardy | Humboldt County | 139 |
| 50152 | Luther | Boone County | 138 |
| 50427 | Chapin | Franklin County | 137 |
| 52166 | Saint Lucas | Fayette County | 137 |
| 52036 | Delaware | Delaware County | 135 |
| 52071 | Saint Donatus | Jackson County | 135 |
| 52308 | Millersburg | Iowa County | 129 |
| 50117 | Hamlin | Audubon County | 128 |
| 52075 | Springbrook | Jackson County | 125 |
| 52066 | North Buena Vista | Clayton County | 124 |
| 52701 | Andover | Clinton County | 124 |
| 50862 | Sharpsburg | Taylor County | 123 |
| 52074 | Spragueville | Jackson County | 119 |
| 52652 | Swedesburg | Henry County | 119 |
| 51578 | Westphalia | Shelby County | 116 |
| 50137 | Killduff | Jasper County | 114 |
| 50520 | Bradgate | Humboldt County | 114 |
| 50652 | Lincoln | Tama County | 113 |
| 51009 | Calumet | O'Brien County | 113 |
| 51447 | Kirkman | Shelby County | 113 |
| 51363 | Superior | Dickinson County | 111 |
| 50227 | Popejoy | Franklin County | 107 |
| 50527 | Curlew | Palo Alto County | 106 |
| 50104 | Gibson | Keokuk County | 103 |
| 51651 | Shambaugh | Page County | 103 |
| 52774 | Welton | Clinton County | 101 |
| 50064 | Dana | Greene County | 100 |
| 50842 | Cromwell | Union County | 99 |
| 52593 | Udell | Appanoose County | 97 |
| 50241 | Saint Marys | Warren County | 96 |
| 50551 | Jolley | Calhoun County | 96 |
| 50657 | Morrison | Grundy County | 96 |
| 50155 | Macksburg | Madison County | 94 |
| 50860 | Redding | Ringgold County | 94 |
| 52588 | Selma | Van Buren County | 91 |
| 50078 | Ferguson | Marshall County | 85 |
| 52548 | Chillicothe | Wapello County | 83 |
| 50426 | Carpenter | Mitchell County | 81 |
| 50052 | Clio | Wayne County | 80 |
| 52568 | Martinsburg | Keokuk County | 80 |
| 50552 | Knierim | Calhoun County | 76 |
| 51340 | Fostoria | Clay County | 75 |
| 51451 | Lanesboro | Carroll County | 74 |
| 52647 | Olds | Henry County | 72 |
| 50835 | Benton | Ringgold County | 69 |
| 52344 | Troy Mills | Linn County | 67 |
| 51045 | Oyens | Plymouth County | 66 |
| 52348 | Vining | Tama County | 66 |
| 52631 | Houghton | Lee County | 65 |
| 52657 | Saint Paul | Lee County | 65 |
| 50467 | Rock Falls | Cerro Gordo County | 63 |
| 50605 | Aredale | Franklin County | 63 |
| 50664 | Oran | Fayette County | 63 |
| 52307 | Middle Amana | Iowa County | 63 |
| 51460 | Ricketts | Crawford County | 61 |
| 50101 | Galt | Wright County | 57 |
| 51656 | Yorktown | Page County | 57 |
| 52771 | Teeds Grove | Clinton County | 56 |
| 51011 | Chatsworth | Sioux County | 54 |
| 51459 | Ralston | Carroll County | 54 |
| 52562 | Hayesville | Keokuk County | 52 |
| 50031 | Beaver | Boone County | 51 |
| 50041 | Bradford | Franklin County | 51 |
| 50255 | Thornburg | Keokuk County | 51 |
| 50839 | Carbon | Adams County | 46 |
| 52312 | Morley | Jones County | 46 |
| 50521 | Burnside | Webster County | 45 |
| 51015 | Climbing Hill | Woodbury County | 45 |
| 51432 | Aspinwall | Crawford County | 45 |
| 50165 | Millerton | Wayne County | 44 |
| 51341 | Gillett Grove | Clay County | 40 |
| 51051 | Rodney | Monona County | 39 |
| 51111 | Sioux City | Woodbury County | 39 |
| 50102 | Garden City | Hardin County | 36 |
| 50620 | Colwell | Floyd County | 36 |
| 50847 | Grant | Montgomery County | 35 |
| 50573 | Plover | Pocahontas County | 31 |
| 50110 | Gray | Audubon County | 29 |
| 50593 | Varina | Pocahontas County | 29 |
| 50608 | Austinville | Butler County | 24 |
| 50831 | Arispe | Union County | 22 |
| 52252 | Langworthy | Jones County | 13 |
| 50033 | Bevington | Madison County | 12 |
| 50649 | Kesley | Butler County | 12 |
| 50127 | Ira | Jasper County | 10 |
| 50319 | Des Moines | Polk County | 0 |
ZIP Codes and ZCTAs (ZIP Code Tabulation Areas) serve different purposes. ZIP Codes are postal codes created by the USPS for mail delivery, and are not correlated to geographical coordinates. ZCTAs provide a way to analyze census data in relation to ZIP Code areas while maintaining geographic consistency and protecting privacy. In addition, there are more ZIP Codes than ZCTAs, because many ZIP Codes for PO Boxes or unique entities don't have corresponding ZCTAs (US Census).
The data shown reflect ZCTAs from the US Census. As of 2025, there are 970 ZCTAs in Iowa (US Census).