| County : | Washington County |
| State : | Kansas (KS) |
| Land Area : | 894.75 sq mi |
| Water Area : | 3.92 sq mi |
| Latitude : | 39.7767142 |
| Longitude : | -97.0956108 |
| Population (2010): | 5,799 |
| Population Estimate (2012) : | 5,806 |
| Population Density : | 6.48/sq mi |
| Housing Units (2012) : | 2,955 |
| Median Household Income (2012) : | $42,962 (Kansas : $51,273, USA : $53,046) |
| Median Family Income (2012) : | $55,097 (Kansas : $64,731, USA : $64,585) |
| Median House Price (2012) : | $55,800 (Kansas : $127,400, USA : $181,400) |
Washington County Cities / Towns
| Barnes City (159) | Clifton City (554) | Greenleaf City (331) |
| Haddam City (104) | Hanover City (682) | Hollenberg City (21) |
| Linn City (410) | Mahaska City (83) | Morrowville City (155) |
| Palmer City (111) | Vining City (45) | Washington City (1,131) |
Washington County Zip Codes
| 66412 (287) | 66548 (961) | 66933 (298) |
| 66937 (893) | 66938 (1,005) | 66943 (505) |
| 66944 (195) | 66945 (1,096) | 66946 (126) |
| 66953 (703) | 66955 (114) | 66958 (314) |
| 66962 (264) | 66968 (1,626) |