| Capital: | Springfield |
|---|---|
| Origen y Formación del condado: | Champaign, Madison, and Greene Counties |
| Población: | 138,333 habitantes |
| Área: | 399 sq mi |
| Localización del condado dentro de Ohio: |
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Localidades en Clark, Ohio
- Bethel Township Clark County
- Catawba
- Clifton
- Crystal Lakes
- Donnelsville
- Enon
- German Township Clark County
- Green Meadows
- Green Township Clark County
- Harmony Township Clark County
- Holiday Valley
- Lawrenceville
- Madison Township Clark County
- Mad River Township Clark County
- Medway
- Moorefield Township Clark County
- New Carlisle
- Northridge Clark County
- North Hampton
- Park Layne
- Pleasant Township Clark County
- South Charleston
- South Vienna
- Springfield
- Springfield Township Clark County
- Tremont City