Fastest Growing Counties in Iowa (2024)

Fastest growing counties in Iowa.

99 Rows

County
Rank
Change (2020)
2024 Pop.
2020 Pop.
Dallas County113.43%114,038100,536
Warren County26.69%56,10752,591
Lyon County34.53%12,47111,930
Johnson County43.32%158,141153,056
Polk County53.31%509,326493,022
Mills County62.31%14,73114,398
Lucas County72.02%8,7928,618
Taylor County81.89%5,9735,862
Wayne County91.72%6,6246,512
Dickinson County101.67%18,06417,767
Madison County111.64%16,90216,629
Marion County121.48%33,91033,414
Guthrie County131.42%10,76310,612
Shelby County141.41%11,90111,735
Bremer County151.4%25,36025,011
Sioux County161.34%36,36535,885
Benton County171.18%25,85025,549
Clay County181.1%16,51516,336
Jones County190.96%20,85120,653
Davis County200.88%9,1919,111
Van Buren County210.8%7,2807,222
Delaware County220.77%17,59317,458
Grundy County230.65%12,41312,333
Harrison County240.62%14,66014,569
Cherokee County250.55%11,72011,656
Buchanan County260.43%20,69320,605
Allamakee County270.42%14,13014,071
Woodbury County280.41%106,344105,912
Decatur County290.38%7,6357,606
Marshall County300.28%40,20740,096
Story County310.23%98,87598,649
Jasper County320.21%37,88937,810
Washington County330.16%22,57822,542
Plymouth County340.12%25,72225,692
Scott County350.1%174,789174,609
Cass County360%13,12313,123
Black Hawk County37-0.12%130,890131,044
Wapello County38-0.21%35,25135,326
Dubuque County39-0.25%99,05999,308
Boone County40-0.36%26,60126,698
Pottawattamie County41-0.4%93,29393,669
Keokuk County42-0.59%9,94510,004
Jackson County43-0.6%19,33819,455
Linn County44-0.61%229,004230,419
Clinton County45-0.79%46,06146,427
Clayton County46-0.89%16,88117,033
Ringgold County47-0.93%4,5964,639
Mitchell County48-0.99%10,49210,597
Calhoun County49-1%9,8019,900
Carroll County50-1.08%20,50320,726
Emmet County51-1.1%9,2449,347
Sac County52-1.18%9,6839,799
Humboldt County53-1.25%9,4799,599
Poweshiek County54-1.3%18,38818,631
Cedar County55-1.32%18,25118,495
Des Moines County56-1.44%38,26438,823
Cerro Gordo County57-1.48%42,38643,022
O'Brien County58-1.49%13,93914,150
Winnebago County59-1.49%10,50310,662
Fayette County60-1.5%19,15419,445
Monroe County61-1.51%7,4787,593
Buena Vista County62-1.52%20,49020,806
Appanoose County63-1.55%12,09712,287
Winneshiek County64-1.58%19,72820,045
Hancock County65-1.63%10,57910,754
Butler County66-1.64%14,09814,333
Mahaska County67-1.73%21,77722,160
Palo Alto County68-1.74%8,8308,986
Webster County69-1.83%36,31836,996
Union County70-1.84%11,90912,132
Fremont County71-1.9%6,4416,566
Floyd County72-1.92%15,30415,604
Franklin County73-1.98%9,80410,002
Worth County74-2.06%7,2837,436
Clarke County75-2.1%9,5339,737
Tama County76-2.1%16,72317,081
Page County77-2.23%14,85215,190
Adair County78-2.3%7,3217,493
Wright County79-2.31%12,61712,916
Hamilton County80-2.35%14,65515,008
Iowa County81-2.36%16,26516,658
Muscatine County82-2.55%42,04143,143
Montgomery County83-2.56%10,06810,333
Howard County84-2.59%9,2439,489
Pocahontas County85-2.63%6,8797,065
Monona County86-3%8,4808,742
Hardin County87-3.07%16,31216,828
Jefferson County88-3.07%15,21215,694
Kossuth County89-3.19%14,32714,799
Chickasaw County90-3.34%11,58811,988
Audubon County91-3.34%5,4935,683
Greene County92-3.36%8,4588,752
Crawford County93-3.56%15,89716,484
Lee County94-3.67%32,30133,533
Ida County95-3.72%6,7617,022
Louisa County96-3.75%10,40910,814
Osceola County97-5.07%5,8846,198
Adams County98-5.99%3,4873,709
Henry County99-7.85%18,84120,447

Fastest Growing Counties in Iowa (2024)