County · Arkansas · United States
Washington County ZIP codes
15 ZIP codes · 12 cities · FIPS 05143
Key facts
- State
- Arkansas (AR)
- FIPS code
- 05143
- Population
- 251,863
- Median household income
- $66,426
- Median age
- 32.5
- Land area
- 941.5 sq mi (2,438.4 km²)
- Population density
- 268 / sq mi
- Area codes
- 479
Cities and ZIP codes in Washington County (12)
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.