Clermont County
Also known as Clermont County, Ohio, Clermont County, OH
county in Ohio, United States
Key facts
- Country
- United States
- State
- Ohio
- Founded
- December 6, 1800
- Named after
- Clermont-Ferrand, France
- Seat
- Batavia
- Largest city
- Milford
- Total
- 460 sq mi (1,200 km )
- Land
- 452 sq mi (1,170 km )
- Water
- 7.7 sq mi (20 km ) 1.7%
- Estimate 2025
- 216,977
- Density
- 462/sq mi (178/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
Article
Clermont County (/ˈklɛərmɒnt/ CLARE-mont), is a county in the U.S. state of Ohio. As of the 2020 census, the population was 208,601. Ordinanced in 1800 as part of the Virginia Military District, Clermont is Ohio's eighth oldest county, the furthest county west in Appalachian Ohio, and the eleventh oldest county of the former Northwest Territory. Clermont County is part of the Cincinnati, OH-KY-IN Metropolitan Statistical Area. The county is named from the French "clear hills or mountain." Its county seat is Batavia, while its largest city is Milford.
History