Ranking of Indiana Counties By Total Voting-age Population (18yrs and over) from Census 2020
Updated on August 22, 2023.
According to the data from the US 2020 Census, as at April 2020, among all the counties in Indiana, Marion County had the highest voting-age population (18 years and over) (742.44K), followed by Lake County (380.65K), and Allen County (287.20K).
The chart below shows the top 10 counties with high voting-age population, and the table below shows the ranking of all Indiana counties based on voting-age population.
You can also see the ranking of counties by population for other states as well as for the whole United States.
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Related Topics: Indiana Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of Indiana Counties By Total Voting-age Population from Census 2020
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| Rank | County | Voting-age Population |
|---|---|---|
| 1 | Marion County | 742442 |
| 2 | Lake County | 380651 |
| 3 | Allen County | 287203 |
| 4 | Hamilton County | 253195 |
| 5 | St. Joseph County | 210201 |
| 6 | Elkhart County | 150481 |
| 7 | Tippecanoe County | 147010 |
| 8 | Vanderburgh County | 141188 |
| 9 | Porter County | 134936 |
| 10 | Hendricks County | 130334 |
| 11 | Johnson County | 121314 |
| 12 | Monroe County | 116544 |
| 13 | Madison County | 101952 |
| 14 | Clark County | 93523 |
| 15 | Delaware County | 90284 |
| 16 | LaPorte County | 88485 |
| 17 | Vigo County | 84465 |
| 18 | Howard County | 65147 |
| 19 | Bartholomew County | 62440 |
| 20 | Floyd County | 62345 |
| 21 | Kosciusko County | 61326 |
| 22 | Hancock County | 60833 |
| 23 | Morgan County | 55773 |
| 24 | Grant County | 52856 |
| 25 | Boone County | 52065 |
| 26 | Wayne County | 51683 |
| 27 | Warrick County | 48428 |
| 28 | Dearborn County | 39363 |
| 29 | Henry County | 39055 |
| 30 | Noble County | 35539 |
| 31 | Lawrence County | 35398 |
| 32 | Jackson County | 34993 |
| 33 | Shelby County | 34854 |
| 34 | Marshall County | 34639 |
| 35 | Dubois County | 33355 |
| 36 | DeKalb County | 32726 |
| 37 | Harrison County | 30603 |
| 38 | Putnam County | 29577 |
| 39 | Montgomery County | 29215 |
| 40 | Cass County | 28711 |
| 41 | Huntington County | 28604 |
| 42 | Knox County | 28289 |
| 43 | Miami County | 28125 |
| 44 | Steuben County | 27504 |
| 45 | LaGrange County | 27020 |
| 46 | Whitley County | 26370 |
| 47 | Jefferson County | 26165 |
| 48 | Gibson County | 25160 |
| 49 | Jasper County | 25032 |
| 50 | Adams County | 24641 |
| 51 | Clinton County | 24551 |
| 52 | Wabash County | 24287 |
| 53 | Greene County | 24000 |
| 54 | Daviess County | 23699 |
| 55 | Ripley County | 22283 |
| 56 | Washington County | 21658 |
| 57 | Wells County | 21349 |
| 58 | Jennings County | 21054 |
| 59 | Clay County | 20452 |
| 60 | Decatur County | 20317 |
| 61 | Posey County | 19448 |
| 62 | Randolph County | 18990 |
| 63 | White County | 18989 |
| 64 | Scott County | 18845 |
| 65 | Fayette County | 18313 |
| 66 | Starke County | 18150 |
| 67 | Franklin County | 17422 |
| 68 | Owen County | 16803 |
| 69 | Sullivan County | 16588 |
| 70 | Fulton County | 15582 |
| 71 | Carroll County | 15504 |
| 72 | Spencer County | 15448 |
| 73 | Jay County | 15233 |
| 74 | Orange County | 15229 |
| 75 | Perry County | 15213 |
| 76 | Fountain County | 12907 |
| 77 | Rush County | 12896 |
| 78 | Brown County | 12642 |
| 79 | Parke County | 12372 |
| 80 | Vermillion County | 12148 |
| 81 | Tipton County | 12072 |
| 82 | Newton County | 10867 |
| 83 | Pulaski County | 9778 |
| 84 | Blackford County | 9527 |
| 85 | Pike County | 9501 |
| 86 | Crawford County | 8221 |
| 87 | Martin County | 7563 |
| 88 | Switzerland County | 7347 |
| 89 | Benton County | 6554 |
| 90 | Warren County | 6524 |
| 91 | Union County | 5487 |
| 92 | Ohio County | 4724 |