Champaign County, Ohio
Champaign County, Ohio | |
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Champaign County Courthouse in Urbana | |
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Flag Seal | |
Location within the U.S. state of Ohio | |
| Coordinates: 40°08′N 83°46′W / 40.14°N 83.77°W | |
| Country | United States |
| State | Ohio |
| Founded | March 1, 1805 |
| Named after | "plain" in French |
| Seat | Urbana |
| Largest city | Urbana |
| Area | |
• Total | 430 sq mi (1,100 km2) |
| • Land | 429 sq mi (1,110 km2) |
| • Water | 1.2 sq mi (3.1 km2) 0.3% |
| Population (2020) | |
• Total | 38,714 |
| • Density | 90.2/sq mi (34.8/km2) |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (EDT) |
| Congressional district | 4th |
| Website | www |
Champaign County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 38,714. Its county seat and largest city is Urbana. The county takes its name from the French word for "open level country". Champaign County became the 18th of 88 Ohio counties on March 1, 1805. It was formed from parts of Greene and Franklin counties by legislative action. Champaign County comprises the Urbana, OH Micropolitan Statistical Area, which is also included in the Dayton–Springfield–Sidney, OH Combined Statistical Area.