Shelby County
Also known as Shelby County, Ohio, Shelby County, OH
county in Ohio, United States
Key facts
- Country
- United States
- State
- Ohio
- Founded
- April 1, 1819
- Named after
- Isaac Shelby
- Seat
- Sidney
- Largest city
- Sidney
- Total
- 411 sq mi (1,060 km )
- Land
- 408 sq mi (1,060 km )
- Water
- 3.0 sq mi (7.8 km ) 0.7%
- Estimate 2025
- 48,065
- Density
- 118/sq mi (45.6/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
~11 min read
Article
Shelby County is a county in the western portion of the U.S. state of Ohio. As of the 2020 United States census, the population was 48,230. Its county seat is Sidney. Its name honors Isaac Shelby, first governor of Kentucky. Shelby County comprises the Sidney, OH Micropolitan Statistical Area, which is also included in the Dayton–Springfield–Sidney, OH Combined Statistical Area.
History