County · Kansas · United States
Washington County ZIP codes
11 ZIP codes · 11 cities · FIPS 20201
Key facts
- State
- Kansas (KS)
- FIPS code
- 20201
- Population
- 5,519
- Median household income
- $62,452
- Median age
- 43.9
- Land area
- 894.8 sq mi (2,317.4 km²)
- Population density
- 6 / sq mi
- Area codes
- 785
Cities and ZIP codes in Washington County (11)
| City | ZIP codes |
|---|---|
| Barnes | 66933 |
| Clifton | 66937 |
| Greenleaf | 66943 |
| Haddam | 66944 |
| Hanover | 66945 |
| Hollenberg | 66946 |
| Linn | 66953 |
| Mahaska | 66955 |
| Morrowville | 66958 |
| Palmer | 66962 |
| Washington | 66968 |
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.