The graph below ranks each Ohio County by total of Black residents according to the 2012 census estimates.
Ohio total of Black population by county
| County | Black Population |
| Cuyahoga |  382,347 |
| Franklin | 260,743 |
| Hamilton | 207,852 |
| Montgomery | 113,153 |
| Lucas | 85,254 |
| Summit | 79,001 |
| Mahoning | 37,674 |
| Butler | 28,935 |
| Stark | 28,883 |
| Lorain | 26,541 |
| Trumbull | 17,422 |
| Allen | 12,850 |
| Greene | 12,453 |
| Clark | 12,279 |
| Richland | 11,523 |
| Fairfield | 9,588 |
| Lake | 8,263 |
| Warren | 7,389 |
| Portage | 7,209 |
| Erie | 6,646 |
| Delaware | 6,342 |
| Licking | 6,038 |
| Ross | 4,649 |
| Marion | 4,172 |
| Jefferson | 3,828 |
| Ashtabula | 3,811 |
| Muskingum | 3,351 |
| Wood | 3,346 |
| Belmont | 2,855 |
| Madison | 2,794 |
| Clermont | 2,588 |
| Columbiana | 2,555 |
| Medina | 2,258 |
| Miami | 2,164 |
| Scioto | 2,122 |
| Pickaway | 2,028 |
| Sandusky | 1,874 |
| Wayne | 1,839 |
| Athens | 1,806 |
| Seneca | 1,401 |
| Lawrence | 1,367 |
| Union | 1,320 |
| Hancock | 1,286 |
| Geauga | 1,220 |
| Shelby | 984 |
| Clinton | 963 |
| Champaign | 911 |
| Defiance | 815 |
| Gallia | 801 |
| Logan | 773 |
| Tuscarawas | 739 |
| Washington | 738 |
| Huron | 712 |
| Fayette | 664 |
| Highland | 646 |
| Guernsey | 598 |
| Knox | 547 |
| Morgan | 448 |
| Ashland | 426 |
| Ottawa | 414 |
| Williams | 413 |
| Coshocton | 405 |
| Brown | 400 |
| Noble | 394 |
| Crawford | 386 |
| Harrison | 346 |
| Van Wert | 287 |
| Pike | 285 |
| Hardin | 285 |
| Darke | 263 |
| Fulton | 255 |
| Hocking | 235 |
| Jackson | 230 |
| Meigs | 213 |
| Preble | 209 |
| Paulding | 193 |
| Auglaize | 183 |
| Morrow | 175 |
| Holmes | 172 |
| Carroll | 171 |
| Putnam | 171 |
| Henry | 169 |
| Perry | 144 |
| Mercer | 123 |
| Adams | 113 |
| Monroe | 73 |
| Wyandot | 68 |
| Vinton | 53 |