Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Springfield | 1 | 57,910 | 58,598 | -0.3% | 2,174 | 26.6 | City |
| New Carlisle | 2 | 5,472 | 5,559 | -0.4% | 2,040 | 2.7 | City |
| Park Layne | 3 | 3,912 | 4,420 | -0.79% | 2,672 | 1.5 | CDP |
| Enon | 4 | 2,428 | 2,463 | -0.37% | 1,876 | 1.3 | Village |
| Choctaw Lake | 5 | 2,286 | 2,099 | 2.37% | 2,204 | 1.0 | CDP |
| Green Meadows | 6 | 2,168 | 2,060 | -0.55% | 2,727 | 0.8 | CDP |
| South Charleston | 7 | 1,682 | 1,709 | -0.41% | 1,364 | 1.2 | Village |
| Crystal Lakes | 8 | 1,625 | 1,478 | 0.62% | 3,378 | 0.5 | CDP |
| Holiday Valley | 9 | 1,516 | 1,573 | 0.07% | 833 | 1.8 | CDP |
| Wright-Patterson AFB | 10 | 1,510 | 2,414 | -1.44% | 153 | 9.9 | CDP |
| Medway | 11 | 623 | 360 | 7.79% | 1,306 | 0.5 | CDP |
| North Hampton | 12 | 452 | 462 | -0.66% | 1,174 | 0.4 | Village |
| South Vienna | 13 | 399 | 407 | -0.5% | 613 | 0.7 | Village |
| Tremont City | 14 | 343 | 353 | -0.87% | 1,552 | 0.2 | Village |
| Plumwood | 15 | 271 | 240 | -1.46% | 436 | 0.6 | CDP |
| Donnelsville | 16 | 253 | 259 | -0.78% | 796 | 0.3 | Village |
| Catawba | 17 | 240 | 244 | -0.41% | 1,039 | 0.2 | Village |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Springfield is the largest city in Clark County.
Catawba is the smallest city in Clark County.
There are 17 cities in Clark County, Ohio.