O'Brien County IA United States
| County FIPS | 19141 |
| Largest City | Sheldon |
| State | Iowa |
| Latitude | 43.0838 |
| Longitude | -95.6249 |
| Population | 14,126 |
| Density | 24.66 people per square mile |
| Time Zone | America/Chicago |
Median household: $68,356
Median individual: $39,735
Mode: 87.5% White
Median house value: $172,032.0
Median: 39.5 years old
With at least college degree: 22.1%
With STEM degree: 36.0%
Never married: 24.1%
Unemployed: 1.0%
All data comes from the SimpleMaps US Counties Database, 2026.
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