Ohio Citizen Voting-age Population By County in 2018 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2018, the citizen voting-age population for Ohio was 8,797,915 and represented 75.57% of the total Ohio population.
Among all Ohio counties, Cuyahoga had the highest citizen voting-age population (956.54K), followed by Franklin (910.58K), and Hamilton (602.46K).
In terms of percentages, Athens had the highest percentage of its population being citizens of voting-age (81.96%), followed by Noble (81.10%), and Ottawa (80.63%).
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 |
|---|---|---|
| Cuyahoga | 956540 | 76.29 |
| Franklin | 910580 | 71.40 |
| Hamilton | 602460 | 74.19 |
| Summit | 414755 | 76.55 |
| Montgomery | 402255 | 75.61 |
| Lucas | 325580 | 75.30 |
| Stark | 289130 | 77.42 |
| Butler | 277650 | 73.40 |
| Lorain | 234705 | 76.52 |
| Mahoning | 182275 | 78.89 |
| Lake | 178135 | 77.43 |
| Warren | 162880 | 71.89 |
| Trumbull | 159205 | 78.89 |
| Clermont | 153430 | 75.50 |
| Delaware | 138230 | 70.16 |
| Medina | 135330 | 76.35 |
| Licking | 130440 | 75.71 |
| Greene | 127945 | 77.16 |
| Portage | 127915 | 78.65 |
| Fairfield | 114165 | 74.66 |
| Clark | 103090 | 76.25 |
| Wood | 101085 | 77.80 |
| Richland | 94345 | 77.76 |
| Wayne | 86610 | 74.53 |
| Columbiana | 82010 | 78.85 |
| Miami | 79620 | 75.97 |
| Allen | 78870 | 76.10 |
| Ashtabula | 75590 | 77.03 |
| Geauga | 71310 | 75.89 |
| Tuscarawas | 70290 | 75.97 |
| Muskingum | 65820 | 76.47 |
| Ross | 60080 | 77.97 |
| Scioto | 59335 | 77.69 |
| Erie | 58995 | 78.52 |
| Hancock | 57265 | 75.66 |
| Belmont | 55120 | 80.50 |
| Athens | 54040 | 81.96 |
| Jefferson | 53735 | 80.34 |
| Marion | 51200 | 78.35 |
| Washington | 48275 | 79.57 |
| Lawrence | 46885 | 77.34 |
| Knox | 46830 | 76.50 |
| Sandusky | 45390 | 76.54 |
| Pickaway | 44655 | 77.77 |
| Huron | 43370 | 74.19 |
| Seneca | 42590 | 76.77 |
| Ashland | 40735 | 76.18 |
| Union | 40690 | 73.11 |
| Darke | 39090 | 75.56 |
| Shelby | 35965 | 73.71 |
| Auglaize | 34500 | 75.35 |
| Madison | 34435 | 78.28 |
| Logan | 34355 | 75.83 |
| Brown | 33445 | 76.57 |
| Ottawa | 32825 | 80.63 |
| Crawford | 32610 | 77.61 |
| Highland | 32405 | 75.35 |
| Fulton | 31835 | 75.25 |
| Clinton | 31750 | 75.79 |
| Preble | 31625 | 76.75 |
| Guernsey | 30350 | 77.28 |
| Mercer | 29965 | 73.44 |
| Champaign | 29940 | 77.04 |
| Holmes | 29680 | 67.67 |
| Defiance | 29095 | 76.01 |
| Williams | 28345 | 76.74 |
| Coshocton | 27885 | 76.24 |
| Perry | 27380 | 76.09 |
| Morrow | 26620 | 76.11 |
| Putnam | 25140 | 74.01 |
| Jackson | 24495 | 75.31 |
| Hardin | 23815 | 75.51 |
| Gallia | 23155 | 76.69 |
| Hocking | 22035 | 77.33 |
| Carroll | 21805 | 79.06 |
| Pike | 21560 | 76.41 |
| Van Wert | 21560 | 76.24 |
| Fayette | 21495 | 75.04 |
| Adams | 20960 | 75.18 |
| Henry | 20685 | 75.73 |
| Meigs | 18125 | 78.26 |
| Wyandot | 16760 | 75.82 |
| Paulding | 14245 | 75.49 |
| Harrison | 12030 | 78.60 |
| Noble | 11715 | 81.10 |
| Morgan | 11530 | 78.44 |
| Monroe | 11135 | 79.03 |
| Vinton | 10140 | 77.35 |
