| Capital: | Tiffin |
|---|---|
| Origen y Formación del condado: | Huron County |
| Población: | 56,745 habitantes |
| Área: | 550 sq mi |
| Localización del condado dentro de Ohio: |
|
Localidades en Seneca, Ohio
- Adams Township Seneca County
- Adrian
- Alvada
- Amsden
- Attica
- Bascom
- Bettsville
- Big Spring Township Seneca County
- Bloomville
- Bloom Township Seneca County
- Clinton Township Seneca County
- Eden Township Seneca County
- Flat Rock
- Fort Seneca
- Fostoria
- Green Springs
- Hopewell Township Seneca County
- Jackson Township Seneca County
- Kansas
- Liberty Township Seneca County
- Loudon Township Seneca County
- Melmore
- New Riegel
- Old Fort
- Pleasant Township Seneca County
- Reed Township Seneca County
- Republic
- Scipio
- Scipio Township Seneca County
- Seneca Township Seneca County
- Thompson Township Seneca County
- Tiffin
- Venice Township Seneca County