| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Nicholsville | city | Ohio | United States | 38.96 | -84.17 | 918 | |
| Nickelplate (historical) | city | Ohio | United States | 41.26 | -82.16 | 830 | |
| Niles | city | Ohio | United States | 41.18 | -80.77 | 862 | |
| Niles Beach | city | Ohio | United States | 41.69 | -83.37 | 830 | |
| Niles Junction | city | Ohio | United States | 41.17 | -80.80 | 898 | |
| Nimisila Mobile Home Park | city | Ohio | United States | 40.95 | -81.52 | 1023 | |
| Nimisila Sunset Heights | city | Ohio | United States | 40.96 | -81.52 | 1095 | |
| Nindeville (historical) | city | Ohio | United States | 41.14 | -84.79 | 830 | |
| Ninemile | city | Ohio | United States | 39.04 | -84.30 | 830 | |
| Nineveh | city | Ohio | United States | 40.05 | -84.55 | 1046 | |
| Nioga (historical) | city | Ohio | United States | 39.78 | -83.32 | 898 | |
| Nipgen | city | Ohio | United States | 39.19 | -83.15 | 997 |