All counties in Indiana
| County Name | Population | State | Rank |
|---|
| Marion County | 903,393 | Indiana | 1 |
| Lake County | 496,005 | Indiana | 2 |
| Allen County | 355,329 | Indiana | 3 |
| Hamilton County | 274,569 | Indiana | 4 |
| St. Joseph County | 266,931 | Indiana | 5 |
| Elkhart County | 197,559 | Indiana | 6 |
| Vanderburgh County | 179,703 | Indiana | 7 |
| Tippecanoe County | 172,780 | Indiana | 8 |
| Porter County | 164,343 | Indiana | 9 |
| Hendricks County | 145,448 | Indiana | 10 |
| Johnson County | 139,654 | Indiana | 11 |
| Monroe County | 137,974 | Indiana | 12 |
| Madison County | 131,636 | Indiana | 13 |
| Delaware County | 117,671 | Indiana | 14 |
| Laporte County | 111,467 | Indiana | 15 |
| Clark County | 110,232 | Indiana | 16 |
| Vigo County | 107,848 | Indiana | 17 |
| Howard County | 82,752 | Indiana | 18 |
| Kosciusko County | 77,358 | Indiana | 19 |
| Bartholomew County | 76,794 | Indiana | 20 |
| Floyd County | 74,578 | Indiana | 21 |
| Grant County | 70,061 | Indiana | 22 |
| Hancock County | 70,002 | Indiana | 23 |
| Wayne County | 68,917 | Indiana | 24 |
| Morgan County | 68,894 | Indiana | 25 |
| Warrick County | 59,689 | Indiana | 26 |
| Boone County | 56,640 | Indiana | 27 |
| Dearborn County | 50,047 | Indiana | 28 |
| Henry County | 49,462 | Indiana | 29 |
| Noble County | 47,536 | Indiana | 30 |
| Marshall County | 47,051 | Indiana | 31 |
| Lawrence County | 46,134 | Indiana | 32 |
| Shelby County | 44,436 | Indiana | 33 |
| Jackson County | 42,376 | Indiana | 34 |
| Dekalb County | 42,223 | Indiana | 35 |
| Dubois County | 41,889 | Indiana | 36 |
| Harrison County | 39,364 | Indiana | 37 |
| Cass County | 38,966 | Indiana | 38 |
| Knox County | 38,440 | Indiana | 39 |
| Montgomery County | 38,124 | Indiana | 40 |
| Putnam County | 37,963 | Indiana | 41 |
| Lagrange County | 37,128 | Indiana | 42 |
| Huntington County | 37,124 | Indiana | 43 |
| Miami County | 36,903 | Indiana | 44 |
| Adams County | 34,387 | Indiana | 45 |
| Steuben County | 34,185 | Indiana | 46 |
| Gibson County | 33,503 | Indiana | 47 |
| Jasper County | 33,478 | Indiana | 48 |
| Whitley County | 33,292 | Indiana | 49 |
| Clinton County | 33,224 | Indiana | 50 |
| Greene County | 33,165 | Indiana | 51 |
| Wabash County | 32,888 | Indiana | 52 |
| Jefferson County | 32,428 | Indiana | 53 |
| Daviess County | 31,648 | Indiana | 54 |
| Ripley County | 28,818 | Indiana | 55 |
| Jennings County | 28,525 | Indiana | 56 |
| Washington County | 28,262 | Indiana | 57 |
| Wells County | 27,636 | Indiana | 58 |
| Clay County | 26,890 | Indiana | 59 |
| Randolph County | 26,171 | Indiana | 60 |
| Posey County | 25,910 | Indiana | 61 |
| Decatur County | 25,740 | Indiana | 62 |
| White County | 24,643 | Indiana | 63 |
| Fayette County | 24,277 | Indiana | 64 |
| Scott County | 24,181 | Indiana | 65 |
| Starke County | 23,363 | Indiana | 66 |
| Franklin County | 23,087 | Indiana | 67 |
| Owen County | 21,575 | Indiana | 68 |
| Sullivan County | 21,475 | Indiana | 69 |
| Jay County | 21,253 | Indiana | 70 |
| Spencer County | 20,952 | Indiana | 71 |
| Fulton County | 20,836 | Indiana | 72 |
| Carroll County | 20,155 | Indiana | 73 |
| Orange County | 19,840 | Indiana | 74 |
| Perry County | 19,338 | Indiana | 75 |
| Rush County | 17,392 | Indiana | 76 |
| Parke County | 17,339 | Indiana | 77 |
| Fountain County | 17,240 | Indiana | 78 |
| Vermillion County | 16,212 | Indiana | 79 |
| Tipton County | 15,936 | Indiana | 80 |
| Brown County | 15,242 | Indiana | 81 |
| Newton County | 14,244 | Indiana | 82 |
| Pulaski County | 13,402 | Indiana | 83 |
| Pike County | 12,845 | Indiana | 84 |
| Blackford County | 12,766 | Indiana | 85 |
| Crawford County | 10,713 | Indiana | 86 |
| Switzerland County | 10,613 | Indiana | 87 |
| Martin County | 10,334 | Indiana | 88 |
| Benton County | 8,854 | Indiana | 89 |
| Warren County | 8,508 | Indiana | 90 |
| Union County | 7,516 | Indiana | 91 |
| Ohio County | 6,128 | Indiana | 92 |