Ranking of Ohio 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 Ohio, Franklin County had the highest voting-age population (18 years and over) (1.02M), followed by Cuyahoga County (1.01M), and Hamilton County (645.53K).
The chart below shows the top 10 counties with high voting-age population, and the table below shows the ranking of all Ohio 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: Ohio Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of Ohio Counties By Total Voting-age Population from Census 2020
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| Rank | County | Voting-age Population |
|---|---|---|
| 1 | Franklin County | 1022233 |
| 2 | Cuyahoga County | 1008892 |
| 3 | Hamilton County | 645526 |
| 4 | Summit County | 428512 |
| 5 | Montgomery County | 420586 |
| 6 | Lucas County | 334866 |
| 7 | Butler County | 299082 |
| 8 | Stark County | 294899 |
| 9 | Lorain County | 245242 |
| 10 | Lake County | 187311 |
| 11 | Mahoning County | 183667 |
| 12 | Warren County | 182253 |
| 13 | Trumbull County | 161789 |
| 14 | Clermont County | 160815 |
| 15 | Delaware County | 157099 |
| 16 | Medina County | 142218 |
| 17 | Licking County | 137465 |
| 18 | Greene County | 132605 |
| 19 | Portage County | 132034 |
| 20 | Fairfield County | 120333 |
| 21 | Clark County | 105692 |
| 22 | Wood County | 104955 |
| 23 | Richland County | 97883 |
| 24 | Wayne County | 88837 |
| 25 | Miami County | 83447 |
| 26 | Columbiana County | 81318 |
| 27 | Allen County | 78419 |
| 28 | Ashtabula County | 76412 |
| 29 | Geauga County | 73972 |
| 30 | Tuscarawas County | 72057 |
| 31 | Muskingum County | 66950 |
| 32 | Ross County | 60804 |
| 33 | Erie County | 60530 |
| 34 | Hancock County | 58460 |
| 35 | Scioto County | 58128 |
| 36 | Belmont County | 53782 |
| 37 | Athens County | 52633 |
| 38 | Jefferson County | 52568 |
| 39 | Marion County | 51628 |
| 40 | Knox County | 48296 |
| 41 | Washington County | 47860 |
| 42 | Union County | 46614 |
| 43 | Sandusky County | 45950 |
| 44 | Lawrence County | 45579 |
| 45 | Pickaway County | 45401 |
| 46 | Huron County | 44780 |
| 47 | Seneca County | 43031 |
| 48 | Ashland County | 40638 |
| 49 | Darke County | 39608 |
| 50 | Shelby County | 36270 |
| 51 | Logan County | 35835 |
| 52 | Auglaize County | 35366 |
| 53 | Madison County | 34632 |
| 54 | Brown County | 33734 |
| 55 | Crawford County | 33149 |
| 56 | Highland County | 32967 |
| 57 | Ottawa County | 32939 |
| 58 | Clinton County | 32671 |
| 59 | Fulton County | 32659 |
| 60 | Preble County | 31745 |
| 61 | Mercer County | 31679 |
| 62 | Holmes County | 30519 |
| 63 | Guernsey County | 30106 |
| 64 | Champaign County | 29878 |
| 65 | Defiance County | 29420 |
| 66 | Williams County | 28880 |
| 67 | Coshocton County | 27671 |
| 68 | Perry County | 26960 |
| 69 | Morrow County | 26895 |
| 70 | Putnam County | 25676 |
| 71 | Jackson County | 24906 |
| 72 | Hardin County | 23628 |
| 73 | Gallia County | 22432 |
| 74 | Fayette County | 22198 |
| 75 | Van Wert County | 22063 |
| 76 | Hocking County | 21922 |
| 77 | Henry County | 21212 |
| 78 | Carroll County | 21151 |
| 79 | Adams County | 20896 |
| 80 | Pike County | 20627 |
| 81 | Meigs County | 17507 |
| 82 | Wyandot County | 16951 |
| 83 | Paulding County | 14273 |
| 84 | Noble County | 11433 |
| 85 | Harrison County | 11427 |
| 86 | Morgan County | 10947 |
| 87 | Monroe County | 10698 |
| 88 | Vinton County | 9981 |