Missouri Citizen Voting-age Population By County in 2021 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the citizen voting-age population for Missouri was 4,635,935 and represented 75.49% of the total Missouri population.
Among all Missouri counties, St. Louis had the highest citizen voting-age population (749.77K), followed by Jackson (523.04K), and St. Charles (301.75K).
In terms of percentages, Nodaway had the highest percentage of its population being citizens of voting-age (83.26%), followed by Stone (82.74%), and Hickory (82.50%).
The chart and table below shows the citizen voting-age population of each county and the percentage of each county's population that were citizens of voting-age.
You can see similar information for other states and by state for the United States.
| County | Citizen Voting-age Population | % of County Population |
|---|---|---|
| St. Louis | 749765 | 74.83 |
| Jackson | 523040 | 73.33 |
| St. Charles | 301750 | 74.99 |
| St. Louis city | 235450 | 77.76 |
| Greene | 230395 | 77.61 |
| Clay | 185240 | 74.06 |
| Jefferson | 172175 | 76.21 |
| Boone | 138345 | 75.94 |
| Jasper | 88520 | 72.52 |
| Cass | 80615 | 75.37 |
| Franklin | 79535 | 76.23 |
| Platte | 78240 | 74.38 |
| Buchanan | 64755 | 75.70 |
| Christian | 64225 | 73.13 |
| Cape Girardeau | 62265 | 76.79 |
| Cole | 59200 | 76.48 |
| St. Francois | 52385 | 77.99 |
| Taney | 43560 | 77.99 |
| Newton | 43555 | 74.28 |
| Lincoln | 43515 | 74.14 |
| Johnson | 41485 | 76.98 |
| Pulaski | 40725 | 76.18 |
| Camden | 34850 | 80.94 |
| Callaway | 34780 | 78.25 |
| Phelps | 33900 | 75.86 |
| Butler | 32145 | 75.97 |
| Pettis | 30395 | 70.82 |
| Howell | 29860 | 75.11 |
| Scott | 28735 | 75.30 |
| Webster | 28100 | 72.09 |
| Lawrence | 27580 | 72.34 |
| Warren | 26725 | 76.28 |
| Laclede | 26655 | 74.25 |
| Barry | 26045 | 75.17 |
| Stone | 25665 | 82.74 |
| Lafayette | 24930 | 76.12 |
| Polk | 24100 | 76.41 |
| Stoddard | 22375 | 77.66 |
| Marion | 21655 | 75.81 |
| Dunklin | 20470 | 71.60 |
| Adair | 19845 | 78.32 |
| Texas | 19500 | 78.42 |
| Randolph | 19340 | 77.73 |
| Audrain | 19170 | 76.00 |
| Miller | 18605 | 75.49 |
| Washington | 18150 | 76.29 |
| Nodaway | 17960 | 83.26 |
| Crawford | 17880 | 77.05 |
| Ray | 17680 | 76.60 |
| Saline | 17340 | 74.49 |
| Henry | 17015 | 77.75 |
| Clinton | 16005 | 75.87 |
| Morgan | 15960 | 76.42 |
| Benton | 15910 | 82.22 |
| McDonald | 15860 | 68.17 |
| Vernon | 14900 | 75.14 |
| Ste. Genevieve | 14380 | 78.13 |
| Perry | 14300 | 75.24 |
| Pike | 13840 | 76.68 |
| Andrew | 13755 | 76.31 |
| Cooper | 13495 | 77.58 |
| Wright | 13455 | 73.75 |
| New Madrid | 12645 | 75.90 |
| Dallas | 12635 | 74.57 |
| Bates | 12220 | 75.90 |
| Pemiscot | 11740 | 73.61 |
| Gasconade | 11680 | 78.89 |
| Moniteau | 11655 | 74.12 |
| Livingston | 11650 | 77.67 |
| Macon | 11555 | 75.92 |
| Dent | 11145 | 76.41 |
| Cedar | 10685 | 75.33 |
| Osage | 10310 | 77.11 |
| Mississippi | 10100 | 77.84 |
| Madison | 9600 | 76.22 |
| DeKalb | 9370 | 80.50 |
| Douglas | 9155 | 77.52 |
| Linn | 9065 | 75.79 |
| Wayne | 8950 | 79.20 |
| Barton | 8900 | 76.00 |
| Montgomery | 8785 | 77.16 |
| Bollinger | 8415 | 78.21 |
| Ripley | 8410 | 76.25 |
| Ralls | 8090 | 78.39 |
| Howard | 7855 | 77.43 |
| Lewis | 7730 | 77.07 |
| Iron | 7505 | 78.14 |
| Grundy | 7355 | 74.29 |
| St. Clair | 7290 | 78.94 |
| Ozark | 6970 | 80.44 |
| Hickory | 6955 | 82.50 |
| Oregon | 6770 | 76.15 |
| Caldwell | 6675 | 75.38 |
| Monroe | 6670 | 77.15 |
| Maries | 6660 | 78.77 |
| Carroll | 6585 | 76.88 |
| Daviess | 6230 | 73.95 |
| Harrison | 6140 | 74.61 |
| Dade | 5985 | 78.91 |
| Chariton | 5695 | 76.65 |
| Shannon | 5590 | 77.80 |
| Clark | 4990 | 75.04 |
| Reynolds | 4985 | 81.19 |
| Gentry | 4625 | 74.24 |
| Shelby | 4580 | 75.27 |
| Sullivan | 4380 | 72.46 |
| Carter | 4205 | 78.38 |
| Atchison | 4200 | 79.10 |
| Putnam | 3610 | 76.56 |
| Holt | 3395 | 79.05 |
| Scotland | 3370 | 70.80 |
| Schuyler | 3025 | 73.87 |
| Knox | 2840 | 75.13 |
| Mercer | 2650 | 74.44 |
| Worth | 1600 | 79.80 |
