Mercer County, Ohio
Mercer County, Ohio | |
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Mercer County Courthouse | |
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Flag Seal | |
Location within the U.S. state of Ohio | |
| Coordinates: 40°32′N 84°38′W / 40.54°N 84.63°W | |
| Country | United States |
| State | Ohio |
| Founded | January 2, 1824 |
| Named after | Hugh Mercer |
| Seat | Celina |
| Largest city | Celina |
| Area | |
• Total | 473 sq mi (1,230 km2) |
| • Land | 462 sq mi (1,200 km2) |
| • Water | 11 sq mi (28 km2) 2.3% |
| Population (2020) | |
• Total | 42,528 |
| • Density | 90/sq mi (35/km2) |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (EDT) |
| Congressional district | 5th |
| Website | www |
Mercer County is located in the U.S. state of Ohio. As of the 2020 census, the population was 42,528. Its county seat is Celina. The county was created in 1820 and later organized in 1824. It is named for Hugh Mercer, an officer in the American Revolutionary War.
Mercer County comprises the Celina, Ohio Micropolitan Statistical Area