| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| J And H Mobile Home Park | city | Ohio | United States | 40.91 | -80.53 | 1095 | |
| J And M Mobile Home Park | city | Ohio | United States | 40.48 | -81.47 | 898 | |
| J And M Trailer Court | city | Ohio | United States | 41.02 | -81.88 | 994 | |
| J D Smith Mobile Home Park | city | Ohio | United States | 39.03 | -83.92 | 895 | |
| J and J Trailer Park | city | Ohio | United States | 39.56 | -82.78 | 928 | |
| Jackson | city | Ohio | United States | 40.96 | -81.90 | 997 | |
| Jackson | city | Ohio | United States | 40.71 | -82.75 | 1220 | |
| Jackson | city | Ohio | United States | 39.05 | -82.64 | 830 | |
| Jackson (historical) | city | Ohio | United States | 39.96 | -81.93 | 875 | |
| Jackson Center | city | Ohio | United States | 40.44 | -84.04 | 997 | |
| Jackson Heights | city | Ohio | United States | 39.03 | -82.63 | 830 | |
| Jackson Heights | city | Ohio | United States | 40.18 | -80.70 | 830 | |
| Jackson Homes | city | Ohio | United States | 39.89 | -83.08 | 830 | |
| Jackson Special | city | Ohio | United States | 39.99 | -81.57 | 830 | |
| Jacksonburg | city | Ohio | United States | 39.54 | -84.50 | 898 | |
| Jacksontown | city | Ohio | United States | 39.96 | -82.41 | 1049 | |
| Jacksonville | city | Ohio | United States | 39.96 | -83.86 | 997 | |
| Jacksonville | city | Ohio | United States | 40.37 | -80.61 | 839 | |
| Jacksonville | city | Ohio | United States | 38.91 | -83.44 | 830 | |
| Jacksonville | city | Ohio | United States | 39.48 | -82.08 | 830 | |
| Jacobsburg | city | Ohio | United States | 39.76 | -81.25 | 1197 | |
| Jacobsburg | city | Ohio | United States | 39.97 | -80.90 | 1197 | |
| Jacques High Chapparal Mobile Home Park | city | Ohio | United States | 41.53 | -81.18 | 1138 | |
| Jaite | city | Ohio | United States | 41.29 | -81.57 | 830 | |
| James Place | city | Ohio | United States | 41.81 | -81.06 | 830 | |
| Jamestown | city | Ohio | United States | 39.66 | -83.73 | 1069 | |
| Jangstauna | city | Ohio | United States | 41.10 | -80.65 | 846 | |
| Jarrett Wood Subdivision | city | Ohio | United States | 41.18 | -84.76 | 830 | |
| Jarvis | city | Ohio | United States | 39.37 | -82.89 | 830 | |
| Jasper | city | Ohio | United States | 39.05 | -83.06 | 830 | |
| Jasper Mills | city | Ohio | United States | 39.52 | -83.52 | 997 | |
| Jaybird | city | Ohio | United States | 38.94 | -83.30 | 830 | |
| Jaysville | city | Ohio | United States | 40.05 | -84.60 | 1046 | |
| Jeddoe | city | Ohio | United States | 41.28 | -81.14 | 1141 | |
| Jefferson | city | Ohio | United States | 41.74 | -80.77 | 925 | |
| Jefferson | city | Ohio | United States | 39.81 | -82.76 | 898 | |
| Jefferson | city | Ohio | United States | 40.80 | -82.02 | 1108 | |
| Jefferson Estates | city | Ohio | United States | 39.57 | -82.95 | 830 | |
| Jefferson Estates | city | Ohio | United States | 41.59 | -84.50 | 830 | |
| Jefferson Estates | city | Ohio | United States | 40.04 | -82.80 | 1013 | |
| Jefferson Heights | city | Ohio | United States | 40.34 | -80.64 | 990 | |
| Jefferson Lodge Mobile Home Park | city | Ohio | United States | 39.95 | -83.30 | 898 | |
| Jefferson Meadows | city | Ohio | United States | 40.01 | -82.82 | 921 | |
| Jefferson Mobile Estates | city | Ohio | United States | 41.75 | -80.78 | 902 | |
| Jefferson Woods | city | Ohio | United States | 39.85 | -82.75 | 830 | |
| Jeffersonville | city | Ohio | United States | 39.65 | -83.56 | 997 | |
| Jeffersonville (historical) | city | Ohio | United States | 40.35 | -80.62 | 830 | |
| Jelloway | city | Ohio | United States | 40.54 | -82.30 | 1197 | |
| Jenera | city | Ohio | United States | 40.90 | -83.73 | 830 | |
| Jericho | city | Ohio | United States | 39.39 | -84.37 | 875 | |
| Jericho | city | Ohio | United States | 39.55 | -84.67 | 977 | |
| Jericho | city | Ohio | United States | 39.62 | -81.11 | 830 | |
| Jerles (historical) | city | Ohio | United States | 39.74 | -81.30 | 1000 | |
| Jerome | city | Ohio | United States | 40.17 | -83.18 | 941 | |
| Jeromesville | city | Ohio | United States | 40.80 | -82.20 | 1122 | |
| Jerry City | city | Ohio | United States | 41.25 | -83.60 | 830 | |
| Jerrys First Addition | city | Ohio | United States | 41.50 | -84.57 | 830 | |
| Jersey | city | Ohio | United States | 40.05 | -82.72 | 1095 | |
| Jerusalem | city | Ohio | United States | 39.12 | -84.52 | 830 | |
| Jerusalem | city | Ohio | United States | 39.85 | -81.09 | 1197 | |
| Jessup | city | Ohio | United States | 39.03 | -83.53 | 898 | |
| Jethro | city | Ohio | United States | 40.63 | -80.60 | 830 | |
| Jewell | city | Ohio | United States | 41.33 | -84.29 | 830 | |
| Jewett | city | Ohio | United States | 40.37 | -81.01 | 1089 | |
| Jim Town | city | Ohio | United States | 41.64 | -84.60 | 862 | |
| Jimtown | city | Ohio | United States | 39.35 | -82.72 | 830 | |
| Jimtown | city | Ohio | United States | 40.82 | -80.53 | 1030 | |
| Jimtown (historical) | city | Ohio | United States | 40.11 | -84.28 | 944 | |
| Jobs | city | Ohio | United States | 39.50 | -82.18 | 830 | |
| Joe (historical) | city | Ohio | United States | 39.65 | -82.41 | 997 | |
| Joetown | city | Ohio | United States | 39.67 | -81.93 | 997 | |
| Johns Creek (historical) | city | Ohio | United States | 38.67 | -82.57 | 830 | |
| Johnson | city | Ohio | United States | 39.55 | -83.33 | 898 | |
| Johnson Mobile Home Park | city | Ohio | United States | 41.62 | -81.46 | 830 | |
| Johnsons Corners | city | Ohio | United States | 41.01 | -81.64 | 1010 | |
| Johnsons Corners | city | Ohio | United States | 40.96 | -81.84 | 984 | |
| Johnsons Subdivision | city | Ohio | United States | 41.52 | -83.49 | 830 | |
| Johnston | city | Ohio | United States | 41.39 | -80.67 | 1066 | |
| Johnston | city | Ohio | United States | 40.55 | -81.37 | 1040 | |
| Johnston Corners | city | Ohio | United States | 41.62 | -83.67 | 830 | |
| Johnstown | city | Ohio | United States | 40.15 | -82.69 | 1125 | |
| Johnsville | city | Ohio | United States | 39.75 | -84.42 | 898 | |
| Jones | city | Ohio | United States | 40.27 | -83.01 | 918 | |
| Jones (historical) | city | Ohio | United States | 39.33 | -84.50 | 830 | |
| Jones City | city | Ohio | United States | 40.88 | -84.18 | 830 | |
| Jones Corner | city | Ohio | United States | 38.82 | -83.29 | 830 | |
| Jones Farm | city | Ohio | United States | 39.25 | -84.34 | 830 | |
| Jonesboro | city | Ohio | United States | 39.30 | -83.83 | 1000 | |
| Jonesboro | city | Ohio | United States | 39.53 | -83.48 | 997 | |
| Jonestown | city | Ohio | United States | 39.10 | -82.63 | 830 | |
| Jonestown | city | Ohio | United States | 40.77 | -84.51 | 830 | |
| Joppa | city | Ohio | United States | 39.15 | -81.80 | 830 | |
| Joppa | city | Ohio | United States | 41.36 | -82.43 | 830 | |
| Jordanville | city | Ohio | United States | 40.77 | -80.76 | 1164 | |
| Josephatowa | city | Ohio | United States | 41.51 | -81.67 | 830 | |
| Joy | city | Ohio | United States | 39.47 | -81.94 | 830 | |
| Joyce | city | Ohio | United States | 40.46 | -81.50 | 997 | |
| Jug Run | city | Ohio | United States | 40.21 | -80.75 | 830 | |
| Jugs Corners | city | Ohio | United States | 40.68 | -82.65 | 1669 | |
| Julia (historical) | city | Ohio | United States | 41.35 | -81.26 | 1200 | |
| Jumbo | city | Ohio | United States | 40.60 | -83.76 | 1049 | |
| Jump | city | Ohio | United States | 40.62 | -83.79 | 997 | |
| Junction | city | Ohio | United States | 41.19 | -84.46 | 830 | |
| Junction City | city | Ohio | United States | 39.72 | -82.30 | 898 | |
| Junior Furnace | city | Ohio | United States | 38.62 | -82.81 | 830 | |
| Justus | city | Ohio | United States | 40.70 | -81.58 | 1059 |