Ranking of Ohio Counties By Population in 2023
Updated on June 21, 2025.
Based on the US Census Vintage data estimates, in 2023, the Population for Ohio was 11.82M. Among all Ohio counties, Franklin County had the highest population (1.34M), followed by Cuyahoga County (1.24M), and Hamilton County (831.56K).
The chart below shows the top 10 counties, and the table below shows the ranking of all Ohio counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
Related Topics: Ohio Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2023 Census.
See this for other years:
Ranking of Ohio Counties By Population in 2023
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| Rank | County | Population |
|---|---|---|
| 1 | Franklin County | 1338903 |
| 2 | Cuyahoga County | 1238679 |
| 3 | Hamilton County | 831559 |
| 4 | Summit County | 537019 |
| 5 | Montgomery County | 535313 |
| 6 | Lucas County | 426240 |
| 7 | Butler County | 395593 |
| 8 | Stark County | 373052 |
| 9 | Lorain County | 319163 |
| 10 | Warren County | 253579 |
| 11 | Delaware County | 232732 |
| 12 | Lake County | 231964 |
| 13 | Mahoning County | 225988 |
| 14 | Clermont County | 212202 |
| 15 | Trumbull County | 200354 |
| 16 | Medina County | 184115 |
| 17 | Licking County | 183540 |
| 18 | Greene County | 170335 |
| 19 | Fairfield County | 165630 |
| 20 | Portage County | 163075 |
| 21 | Clark County | 134735 |
| 22 | Wood County | 132813 |
| 23 | Richland County | 125003 |
| 24 | Wayne County | 116635 |
| 25 | Miami County | 110898 |
| 26 | Allen County | 100851 |
| 27 | Columbiana County | 100137 |
| 28 | Ashtabula County | 96962 |
| 29 | Geauga County | 95389 |
| 30 | Tuscarawas County | 92017 |
| 31 | Muskingum County | 86312 |
| 32 | Ross County | 76340 |
| 33 | Hancock County | 74847 |
| 34 | Erie County | 74125 |
| 35 | Scioto County | 72176 |
| 36 | Union County | 69765 |
| 37 | Belmont County | 64980 |
| 38 | Marion County | 64828 |
| 39 | Jefferson County | 64116 |
| 40 | Knox County | 63344 |
| 41 | Athens County | 62969 |
| 42 | Pickaway County | 61064 |
| 43 | Sandusky County | 58785 |
| 44 | Washington County | 58513 |
| 45 | Huron County | 58258 |
| 46 | Lawrence County | 56138 |
| 47 | Seneca County | 54628 |
| 48 | Ashland County | 52183 |
| 49 | Darke County | 51432 |
| 50 | Shelby County | 47785 |
| 51 | Logan County | 46045 |
| 52 | Auglaize County | 46018 |
| 53 | Madison County | 44668 |
| 54 | Holmes County | 44439 |
| 55 | Brown County | 43834 |
| 56 | Highland County | 43588 |
| 57 | Mercer County | 42448 |
| 58 | Clinton County | 41972 |
| 59 | Fulton County | 41951 |
| 60 | Crawford County | 41591 |
| 61 | Preble County | 40563 |
| 62 | Ottawa County | 39819 |
| 63 | Champaign County | 38857 |
| 64 | Defiance County | 38437 |
| 65 | Guernsey County | 38126 |
| 66 | Coshocton County | 36866 |
| 67 | Williams County | 36566 |
| 68 | Morrow County | 35583 |
| 69 | Perry County | 35577 |
| 70 | Putnam County | 34254 |
| 71 | Jackson County | 32669 |
| 72 | Hardin County | 30406 |
| 73 | Gallia County | 28964 |
| 74 | Fayette County | 28831 |
| 75 | Van Wert County | 28725 |
| 76 | Hocking County | 27567 |
| 77 | Henry County | 27545 |
| 78 | Adams County | 27542 |
| 79 | Pike County | 26983 |
| 80 | Carroll County | 26754 |
| 81 | Meigs County | 21772 |
| 82 | Wyandot County | 21466 |
| 83 | Paulding County | 18728 |
| 84 | Noble County | 14345 |
| 85 | Harrison County | 14183 |
| 86 | Morgan County | 13626 |
| 87 | Monroe County | 13165 |
| 88 | Vinton County | 12498 |
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