O'Brien County, Iowa
O'Brien County, Iowa | |
|---|---|
The O'Brien County Courthouse in Primghar | |
Location within the U.S. state of Iowa | |
| Coordinates: 43°04′53″N 95°37′34″W / 43.081388888889°N 95.626111111111°W | |
| Country | United States |
| State | Iowa |
| Founded | January 15, 1851 |
| Named after | William Smith O'Brien |
| Seat | Primghar |
| Largest city | Sheldon |
| Area | |
• Total | 573 sq mi (1,480 km2) |
| • Land | 573 sq mi (1,480 km2) |
| • Water | 0.2 sq mi (0.52 km2) 0.03% |
| Population (2020) | |
• Total | 14,182 |
• Estimate (2024) | 14,260 |
| • Density | 24.8/sq mi (9.56/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 4th |
| Website | obriencounty |
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O'Brien County is a county in the U.S. state of Iowa. As of the 2020 United States census, the population was 14,182. The county seat is Primghar.