Identifiers: city · CDP · village
| Rank | Community | Population |
|---|---|---|
| 1 | Dublin (city), OH | 49,328 |
| 2 | Delaware (city), OH | 41,302 |
| 3 | Hilliard (city), OH | 37,114 |
| 4 | Upper Arlington (city), OH | 36,800 |
| 5 | Marysville (city), OH | 25,571 |
| 6 | Worthington (city), OH | 14,786 |
| 7 | Powell (city), OH | 14,163 |
| 8 | Bellefontaine (city), OH | 14,115 |
| 9 | Lincoln Village (CDP), OH | 9,702 |
| 10 | Huber Ridge (CDP), OH | 4,940 |
| 11 | Plain City (village), OH | 4,065 |
| 12 | New California (CDP), OH | 2,225 |
| 13 | Richwood (village), OH | 2,222 |
| 14 | Mechanicsburg (village), OH | 1,681 |
| 15 | North Lewisburg (village), OH | 1,636 |
| 16 | Ostrander (village), OH | 1,094 |
| 17 | Prospect (village), OH | 1,067 |
| 18 | Shawnee Hills (village), OH | 835 |
| 19 | Milford Center (village), OH | 807 |
| 20 | West Mansfield (village), OH | 749 |