County · Oklahoma · United States
Harmon County ZIP codes
3 ZIP codes · 3 cities · FIPS 40057
Key facts
- State
- Oklahoma (OK)
- FIPS code
- 40057
- Population
- 2,452
- Median household income
- $54,286
- Median age
- 40.3
- Land area
- 537.3 sq mi (1,391.5 km²)
- Population density
- 5 / sq mi
- Area codes
- 580
Cities and ZIP codes in Harmon County (3)
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.