Indiana Counties by Population (2026)
2026 Pop.
100K
200K
300K
400K
500K
600K
700K
800K
900K
Top 5 Most Populous Counties
994,179
506,727
405,564
394,387
272,786
| County | 2026 Pop. ↓ | Area (mi²) | Density (/mi²) | Change (2020) |
|---|---|---|---|---|
| Marion County | 994,179 | 396 | 2,511 | 1.79% |
| Lake County | 506,727 | 499 | 1,015 | 1.56% |
| Allen County | 405,564 | 657 | 617 | 5.04% |
| Hamilton County | 394,387 | 394 | 1,001 | 13% |
| St. Joseph County | 272,786 | 458 | 596 | 0.04% |
| Elkhart County | 209,352 | 463 | 452 | 1.14% |
| Hendricks County | 196,256 | 407 | 482 | 11.76% |
| Tippecanoe County | 191,002 | 499 | 383 | 2.48% |
| Vanderburgh County | 182,850 | 233 | 785 | 1.39% |
| Johnson County | 177,501 | 320 | 555 | 9.41% |
| Porter County | 176,678 | 418 | 423 | 1.94% |
| Monroe County | 143,858 | 395 | 364 | 2.3% |
| Madison County | 136,604 | 452 | 302 | 4.95% |
| Clark County | 133,139 | 372 | 358 | 9.69% |
| Delaware County | 113,460 | 392 | 289 | 1.52% |
| LaPorte County | 111,239 | 598 | 186 | -0.93% |
| Vigo County | 106,826 | 404 | 264 | 0.64% |
| Hancock County | 93,061 | 306 | 304 | 16.07% |
| Bartholomew County | 86,516 | 407 | 213 | 5.23% |
| Howard County | 83,790 | 293 | 286 | 0.24% |
| Boone County | 82,738 | 423 | 196 | 16.35% |
| Floyd County | 82,507 | 148 | 557 | 2.47% |
| Kosciusko County | 81,015 | 531 | 153 | 1.08% |
| Morgan County | 75,889 | 404 | 188 | 5.63% |
| Warrick County | 67,285 | 385 | 175 | 5.13% |
| Grant County | 66,812 | 414 | 161 | 0.46% |
| Wayne County | 66,002 | 402 | 164 | -0.77% |
| Dearborn County | 51,504 | 305 | 169 | 1.48% |
| Henry County | 49,253 | 392 | 126 | 0.71% |
| Noble County | 47,928 | 411 | 117 | 0.98% |
| Jackson County | 47,304 | 510 | 93 | 1.8% |
| Marshall County | 46,660 | 444 | 105 | 1.29% |
| Shelby County | 46,151 | 411 | 112 | 2.41% |
| Lawrence County | 45,906 | 449 | 102 | 1.98% |
| DeKalb County | 44,732 | 363 | 123 | 3.33% |
| Dubois County | 44,090 | 427 | 103 | 1.03% |
| LaGrange County | 41,492 | 380 | 109 | 2.36% |
| Harrison County | 40,688 | 484 | 84 | 2.56% |
| Montgomery County | 38,998 | 505 | 77 | 2.79% |
| Putnam County | 37,994 | 481 | 79 | 3.54% |
| Cass County | 37,743 | 412 | 92 | -0.13% |
| Huntington County | 37,483 | 383 | 98 | 2.28% |
| Adams County | 36,758 | 339 | 108 | 2.53% |
| Knox County | 35,547 | 516 | 69 | -1.95% |
| Whitley County | 35,160 | 336 | 105 | 2.4% |
| Steuben County | 34,810 | 309 | 113 | 1.04% |
| Miami County | 34,509 | 374 | 92 | -3.89% |
| Daviess County | 34,287 | 430 | 80 | 2.78% |
| Jasper County | 34,133 | 560 | 61 | 3.71% |
| Jefferson County | 33,494 | 361 | 93 | 1.22% |
| Clinton County | 33,337 | 405 | 82 | 0.46% |
| Gibson County | 33,184 | 487 | 68 | 0.38% |
| Greene County | 31,138 | 542 | 57 | 1.09% |
| Wabash County | 30,700 | 413 | 74 | -0.75% |
| Ripley County | 29,508 | 446 | 66 | 1.83% |
| Wells County | 28,926 | 368 | 79 | 2.72% |
| Washington County | 28,408 | 514 | 55 | 0.63% |
| Jennings County | 27,520 | 377 | 73 | -0.24% |
| Decatur County | 26,638 | 373 | 71 | 0.65% |
| Clay County | 26,468 | 358 | 74 | 0.16% |
| Scott County | 25,254 | 190 | 133 | 3.58% |
| White County | 25,160 | 505 | 50 | 1.97% |
| Posey County | 24,918 | 409 | 61 | -1.08% |
| Randolph County | 24,491 | 452 | 54 | 0.32% |
| Fayette County | 23,486 | 215 | 109 | 0.52% |
| Starke County | 23,444 | 309 | 76 | 0.2% |
| Franklin County | 23,436 | 384 | 61 | 2.83% |
| Owen County | 22,114 | 385 | 57 | 3.7% |
| Sullivan County | 20,969 | 447 | 47 | 0.72% |
| Carroll County | 20,600 | 372 | 55 | 1.28% |
| Fulton County | 20,147 | 368 | 55 | -1.61% |
| Jay County | 19,977 | 384 | 52 | -2.46% |
| Spencer County | 19,965 | 397 | 50 | 0.68% |
| Orange County | 19,867 | 398 | 50 | 0.11% |
| Perry County | 19,390 | 382 | 51 | 1.2% |
| Fountain County | 17,154 | 396 | 43 | 4.01% |
| Parke County | 16,828 | 445 | 38 | 4.18% |
| Rush County | 16,782 | 408 | 41 | 0.1% |
| Brown County | 15,933 | 312 | 51 | 2.92% |
| Vermillion County | 15,445 | 257 | 60 | 0.28% |
| Tipton County | 15,267 | 261 | 58 | -0.79% |
| Newton County | 14,289 | 402 | 36 | 3.64% |
| Pulaski County | 12,493 | 434 | 29 | -0.21% |
| Pike County | 11,932 | 334 | 36 | -2.56% |
| Blackford County | 11,638 | 165 | 71 | -3.88% |
| Crawford County | 10,451 | 306 | 34 | -0.72% |
| Switzerland County | 10,039 | 221 | 45 | 3.07% |
| Martin County | 9,824 | 336 | 29 | 0.16% |
| Benton County | 8,885 | 406 | 22 | 2.03% |
| Warren County | 8,481 | 365 | 23 | 0.66% |
| Union County | 6,792 | 161 | 42 | -4.14% |
| Ohio County | 5,987 | 86 | 70 | 1.03% |
Sources
- US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
- American Community Survey (2009 - 2013)
- Census QuickFacts
- Historical Populations of States and Counties (1790 - 1990)