County · Iowa · United States
O'Brien County ZIP codes
8 ZIP codes · 8 cities · FIPS 19141
Key facts
- State
- Iowa (IA)
- FIPS code
- 19141
- Population
- 14,103
- Median household income
- $68,216
- Median age
- 39.8
- Land area
- 573 sq mi (1,484.2 km²)
- Population density
- 25 / sq mi
- Area codes
- 712
Cities and ZIP codes in O'Brien County (8)
| City | ZIP codes |
|---|---|
| Archer | 51231 |
| Calumet | 51009 |
| Hartley | 51346 |
| Paullina | 51046 |
| Primghar | 51245 |
| Sanborn | 51248 |
| Sheldon | 51201 |
| Sutherland | 51058 |
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.