| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Hach's Mobile Home Park | city | Ohio | United States | 41.68 | -81.31 | 721 | |
| Hackney | city | Ohio | United States | 39.63 | -81.68 | 800 | |
| Hagan Addition | city | Ohio | United States | 40.21 | -80.88 | 948 | |
| Hageman | city | Ohio | United States | 39.39 | -84.26 | 698 | |
| Hageman (historical) | city | Ohio | United States | 40.21 | -84.08 | 1095 | |
| Hagenbaugh (historical) | city | Ohio | United States | 40.15 | -83.69 | 1105 | |
| Hagerty (historical) | city | Ohio | United States | 39.67 | -82.96 | 688 | |
| Hagler | city | Ohio | United States | 39.59 | -83.51 | 997 | |
| Hakes Corners | city | Ohio | United States | 41.20 | -80.73 | 1040 | |
| Hales Creek | city | Ohio | United States | 38.81 | -82.68 | 780 | |
| Haller (historical) | city | Ohio | United States | 41.56 | -84.06 | 728 | |
| Hallett | city | Ohio | United States | 41.71 | -83.52 | 577 | |
| Halley (historical) | city | Ohio | United States | 38.65 | -82.23 | 898 | |
| Halliday Heights | city | Ohio | United States | 38.80 | -82.22 | 518 | |
| Hallock | city | Ohio | United States | 41.53 | -84.56 | 823 | |
| Halls Corners | city | Ohio | United States | 41.16 | -80.63 | 987 | |
| Halls Valley (historical) | city | Ohio | United States | 39.66 | -81.94 | 971 | |
| Hallsville | city | Ohio | United States | 39.44 | -82.83 | 898 | |
| Halo | city | Ohio | United States | 41.04 | -81.55 | 997 | |
| Hambden | city | Ohio | United States | 41.60 | -81.15 | 1299 | |
| Hamburg | city | Ohio | United States | 39.65 | -82.66 | 1099 | |
| Hamburg | city | Ohio | United States | 39.89 | -84.68 | 1125 | |
| Hamburg (historical) | city | Ohio | United States | 39.58 | -82.10 | 813 | |
| Hamden | city | Ohio | United States | 39.16 | -82.53 | 764 | |
| Hamer | city | Ohio | United States | 41.63 | -84.42 | 797 | |
| Hamersville | city | Ohio | United States | 38.92 | -83.98 | 931 | |
| Hametown | city | Ohio | United States | 41.00 | -81.67 | 1102 | |
| Hamilton | city | Ohio | United States | 39.40 | -84.56 | 600 | |
| Hamilton | city | Ohio | United States | 39.77 | -81.24 | 1167 | |
| Hamilton Meadows | city | Ohio | United States | 39.85 | -82.98 | 698 | |
| Hamler | city | Ohio | United States | 41.23 | -84.03 | 702 | |
| Hamlet | city | Ohio | United States | 39.02 | -84.20 | 898 | |
| Hamlet Park | city | Ohio | United States | 41.16 | -81.21 | 1079 | |
| Hamley Run | city | Ohio | United States | 39.40 | -82.17 | 698 | |
| Hammansburg | city | Ohio | United States | 41.23 | -83.69 | 705 | |
| Hammond Crossroad | city | Ohio | United States | 40.18 | -80.96 | 1197 | |
| Hammond Mobile Home Park | city | Ohio | United States | 38.85 | -83.90 | 898 | |
| Hammondsville | city | Ohio | United States | 40.56 | -80.71 | 698 | |
| Hampstead | city | Ohio | United States | 39.68 | -84.13 | 997 | |
| Hampton Woods | city | Ohio | United States | 39.98 | -83.94 | 1040 | |
| Hancock | city | Ohio | United States | 41.16 | -83.85 | 728 | |
| Hanersville | city | Ohio | United States | 38.84 | -82.22 | 593 | |
| Hanesville | city | Ohio | United States | 39.04 | -82.22 | 800 | |
| Haney (historical) | city | Ohio | United States | 41.26 | -83.77 | 695 | |
| Hanford | city | Ohio | United States | 39.95 | -82.95 | 731 | |
| Hanging Rock | city | Ohio | United States | 38.56 | -82.72 | 495 | |
| Hanley Village | city | Ohio | United States | 40.70 | -82.54 | 1433 | |
| Hannibal | city | Ohio | United States | 39.67 | -80.87 | 800 | |
| Hanover | city | Ohio | United States | 40.08 | -82.26 | 895 | |
| Hanover | city | Ohio | United States | 40.37 | -81.07 | 1164 | |
| Hanover (historical) | city | Ohio | United States | 39.43 | -84.65 | 800 | |
| Hanoverton | city | Ohio | United States | 40.75 | -80.94 | 1197 | |
| Hanville Corners | city | Ohio | United States | 41.12 | -82.61 | 898 | |
| Happy Corners | city | Ohio | United States | 39.85 | -84.31 | 898 | |
| Happy Homes | city | Ohio | United States | 40.00 | -82.62 | 1040 | |
| Happy Hours Addition | city | Ohio | United States | 38.77 | -82.87 | 570 | |
| Happy Valley Mobile Home Park | city | Ohio | United States | 39.97 | -83.84 | 938 | |
| Har-Win Acres | city | Ohio | United States | 39.96 | -82.53 | 898 | |
| Harbor | city | Ohio | United States | 41.89 | -80.82 | 616 | |
| Harbor Acres | city | Ohio | United States | 41.55 | -82.83 | 580 | |
| Harbor Hills | city | Ohio | United States | 39.94 | -82.44 | 898 | |
| Harbor Point | city | Ohio | United States | 40.54 | -84.54 | 875 | |
| Harbor View | city | Ohio | United States | 41.69 | -83.44 | 574 | |
| Harbourtown Mobile Home Community | city | Ohio | United States | 41.39 | -82.43 | 597 | |
| Hard | city | Ohio | United States | 40.67 | -81.95 | 895 | |
| Hardin | city | Ohio | United States | 40.29 | -84.24 | 958 | |
| Hardscrabble | city | Ohio | United States | 40.28 | -81.83 | 944 | |
| Hardscrabble | city | Ohio | United States | 41.26 | -81.93 | 836 | |
| Hardscrabble | city | Ohio | United States | 41.26 | -80.87 | 898 | |
| Hardscrabble (historical) | city | Ohio | United States | 40.75 | -81.32 | 1095 | |
| Harewood Acres | city | Ohio | United States | 39.20 | -84.39 | 731 | |
| Harlan Park | city | Ohio | United States | 39.53 | -84.39 | 741 | |
| Harlem | city | Ohio | United States | 40.15 | -82.84 | 997 | |
| Harlem Springs | city | Ohio | United States | 40.52 | -81.00 | 1200 | |
| Harley | city | Ohio | United States | 39.85 | -82.69 | 826 | |
| Harmar | city | Ohio | United States | 39.41 | -81.46 | 606 | |
| Harmon | city | Ohio | United States | 40.71 | -81.56 | 1043 | |
| Harmons Landing | city | Ohio | United States | 40.51 | -84.44 | 885 | |
| Harmony | city | Ohio | United States | 39.92 | -83.70 | 1072 | |
| Harmony Estates Mobile Home Park | city | Ohio | United States | 39.93 | -83.67 | 1099 | |
| Harmony Mobile Home Park | city | Ohio | United States | 39.68 | -84.24 | 764 | |
| Harper | city | Ohio | United States | 39.36 | -83.26 | 994 | |
| Harper | city | Ohio | United States | 40.43 | -83.71 | 1315 | |
| Harpersfield | city | Ohio | United States | 41.76 | -80.95 | 751 | |
| Harpster | city | Ohio | United States | 40.74 | -83.25 | 898 | |
| Harries | city | Ohio | United States | 39.78 | -84.14 | 895 | |
| Harriett | city | Ohio | United States | 39.12 | -83.49 | 984 | |
| Harriettsville | city | Ohio | United States | 39.63 | -81.34 | 800 | |
| Harris | city | Ohio | United States | 39.22 | -83.14 | 1000 | |
| Harrisburg | city | Ohio | United States | 40.89 | -81.23 | 1256 | |
| Harrisburg | city | Ohio | United States | 39.81 | -83.17 | 800 | |
| Harrisburg | city | Ohio | United States | 38.90 | -82.35 | 698 | |
| Harrison | city | Ohio | United States | 39.26 | -84.82 | 600 | |
| Harrison Furnace | city | Ohio | United States | 38.83 | -82.88 | 793 | |
| Harrison Mills | city | Ohio | United States | 38.83 | -82.81 | 564 | |
| Harrisonville | city | Ohio | United States | 39.13 | -82.13 | 797 | |
| Harrisport (historical) | city | Ohio | United States | 41.18 | -81.01 | 918 | |
| Harrisville | city | Ohio | United States | 40.18 | -80.89 | 1197 | |
| Harrod | city | Ohio | United States | 40.71 | -83.92 | 990 | |
| Harry's Mobile Home Park | city | Ohio | United States | 41.44 | -82.23 | 597 | |
| Harry's Trailer Park | city | Ohio | United States | 40.56 | -83.12 | 964 | |
| Harshasville | city | Ohio | United States | 38.91 | -83.54 | 800 | |
| Harter Heights | city | Ohio | United States | 40.80 | -81.42 | 1105 | |
| Hartford | city | Ohio | United States | 41.31 | -80.57 | 1174 | |
| Hartford (historical) | city | Ohio | United States | 40.74 | -84.31 | 803 | |
| Hartland | city | Ohio | United States | 41.18 | -82.49 | 931 | |
| Hartland Station | city | Ohio | United States | 41.21 | -82.49 | 928 | |
| Hartleyville | city | Ohio | United States | 39.54 | -82.10 | 770 | |
| Hartsburg | city | Ohio | United States | 41.09 | -84.32 | 705 | |
| Hartsgrove | city | Ohio | United States | 41.61 | -80.95 | 997 | |
| Hartshorn | city | Ohio | United States | 39.71 | -81.22 | 997 | |
| Hartville | city | Ohio | United States | 40.96 | -81.33 | 1181 | |
| Hartwell | city | Ohio | United States | 39.21 | -84.47 | 583 | |
| Hartwood | city | Ohio | United States | 40.28 | -81.48 | 997 | |
| Harveysburg | city | Ohio | United States | 39.50 | -84.01 | 935 | |
| Harwood | city | Ohio | United States | 39.13 | -83.85 | 938 | |
| Haselton | city | Ohio | United States | 41.08 | -80.62 | 843 | |
| Haskins | city | Ohio | United States | 41.46 | -83.71 | 662 | |
| Hassan (historical) | city | Ohio | United States | 40.85 | -83.77 | 898 | |
| Hastings | city | Ohio | United States | 40.66 | -82.44 | 1295 | |
| Hatch | city | Ohio | United States | 39.01 | -83.18 | 997 | |
| Hatfield | city | Ohio | United States | 39.58 | -82.07 | 800 | |
| Hatton | city | Ohio | United States | 41.25 | -83.47 | 721 | |
| Hattonia (historical) | city | Ohio | United States | 40.29 | -81.13 | 1062 | |
| Havana | city | Ohio | United States | 41.14 | -82.75 | 833 | |
| Haven Park | city | Ohio | United States | 41.64 | -83.71 | 646 | |
| Haven View | city | Ohio | United States | 40.01 | -84.06 | 990 | |
| Havens | city | Ohio | United States | 41.31 | -83.19 | 675 | |
| Havens Corners | city | Ohio | United States | 40.02 | -82.82 | 954 | |
| Havensport | city | Ohio | United States | 39.81 | -82.67 | 856 | |
| Haverhill | city | Ohio | United States | 38.58 | -82.83 | 495 | |
| Haviland | city | Ohio | United States | 41.02 | -84.58 | 721 | |
| Hawk Subdivision | city | Ohio | United States | 38.83 | -82.24 | 770 | |
| Hawks | city | Ohio | United States | 39.11 | -82.39 | 698 | |
| Hayden | city | Ohio | United States | 40.06 | -83.20 | 925 | |
| Haydenville | city | Ohio | United States | 39.48 | -82.33 | 787 | |
| Hayes Colony | city | Ohio | United States | 40.32 | -83.09 | 898 | |
| Hayes Corners | city | Ohio | United States | 41.46 | -81.02 | 1200 | |
| Hayes Place | city | Ohio | United States | 41.61 | -83.48 | 616 | |
| Hayesville | city | Ohio | United States | 39.54 | -82.93 | 705 | |
| Hayesville | city | Ohio | United States | 40.77 | -82.26 | 1164 | |
| Haynes | city | Ohio | United States | 39.43 | -82.68 | 698 | |
| Haynesville (historical) | city | Ohio | United States | 40.48 | -83.43 | 997 | |
| Hays Corner | city | Ohio | United States | 39.80 | -84.37 | 908 | |
| Haysville (historical) | city | Ohio | United States | 40.62 | -80.81 | 898 | |
| Hayward | city | Ohio | United States | 39.57 | -81.67 | 800 | |
| Hazael | city | Ohio | United States | 39.05 | -81.80 | 636 | |
| Hazelton | city | Ohio | United States | 40.50 | -81.23 | 1099 | |
| Hazelwood | city | Ohio | United States | 39.27 | -84.36 | 793 |