| County | Black Percentage of Total Population |
| Cuyahoga |  30 |
| Hamilton | 26 |
| Franklin | 22 |
| Montgomery | 21 |
| Lucas | 20 |
| Mahoning | 16 |
| Summit | 15 |
| Allen | 12 |
| Richland | 9 |
| Clark | 9 |
| Lorain | 9 |
| Erie | 9 |
| Trumbull | 8 |
| Butler | 8 |
| Stark | 8 |
| Greene | 8 |
| Fairfield | 7 |
| Madison | 7 |
| Marion | 6 |
| Ross | 6 |
| Jefferson | 6 |
| Portage | 4 |
| Belmont | 4 |
| Muskingum | 4 |
| Ashtabula | 4 |
| Pickaway | 4 |
| Lake | 4 |
| Licking | 4 |
| Delaware | 4 |
| Warren | 3 |
| Sandusky | 3 |
| Morgan | 3 |
| Athens | 3 |
| Noble | 3 |
| Scioto | 3 |
| Wood | 3 |
| Gallia | 3 |
| Union | 3 |
| Seneca | 3 |
| Columbiana | 2 |
| Clinton | 2 |
| Champaign | 2 |
| Fayette | 2 |
| Harrison | 2 |
| Lawrence | 2 |
| Defiance | 2 |
| Miami | 2 |
| Shelby | 2 |
| Logan | 2 |
| Hancock | 2 |
| Wayne | 2 |
| Highland | 2 |
| Guernsey | 2 |
| Geauga | 1 |
| Medina | 1 |
| Clermont | 1 |
| Huron | 1 |
| Washington | 1 |
| Coshocton | 1 |
| Williams | 1 |
| Van Wert | 1 |
| Ottawa | 1 |
| Paulding | 1 |
| Pike | 1 |
| Crawford | 1 |
| Knox | 1 |
| Hardin | 1 |
| Meigs | 1 |
| Brown | 1 |
| Hocking | 1 |
| Ashland | 1 |
| Tuscarawas | 1 |
| Jackson | 1 |
| Carroll | 1 |
| Fulton | 1 |
| Henry | 1 |
| Darke | 1 |
| Putnam | 1 |
| Preble | 1 |
| Monroe | 1 |
| Morrow | 1 |
| Holmes | 0 |
| Auglaize | 0 |
| Vinton | 0 |
| Perry | 0 |
| Adams | 0 |
| Mercer | 0 |
| Wyandot | 0 |