Jefferson County, Iowa
Jefferson County, Iowa | |
|---|---|
The Courthouse in Fairfield is on the NRHP | |
Location within the U.S. state of Iowa | |
| Coordinates: 41°01′53″N 91°56′41″W / 41.031388888889°N 91.944722222222°W | |
| Country | United States |
| State | Iowa |
| Founded | January 21, 1839 |
| Named after | Thomas Jefferson |
| Seat | Fairfield |
| Largest city | Fairfield |
| Area | |
• Total | 437 sq mi (1,130 km2) |
| • Land | 436 sq mi (1,130 km2) |
| • Water | 1.4 sq mi (3.6 km2) 0.3% |
| Population (2020) | |
• Total | 15,663 |
• Estimate (2024) | 15,781 |
| • Density | 35.9/sq mi (13.9/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 1st |
| Website | https://jeffersoncounty.iowa.gov/ |
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Jefferson County is a county located in the U.S. state of Iowa. As of the 2020 United States census, the population was 15,663. The county seat is Fairfield. The county was formed in January 1839, and was named for U.S. President Thomas Jefferson. Jefferson County comprises the Fairfield, IA Micropolitan Statistical Area.