| County : | Washington County |
| State : | Iowa (IA) |
| Land Area : | 568.83 sq mi |
| Water Area : | 2.08 sq mi |
| Latitude : | 41.3294011 |
| Longitude : | -91.7250523 |
| Population (2010): | 21,704 |
| Population Estimate (2012) : | 21,765 |
| Population Density : | 38.16/sq mi |
| Housing Units (2012) : | 9,516 |
| Median Household Income (2012) : | $52,636 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $64,956 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $116,900 (Iowa : $123,000, USA : $181,400) |
Washington County Cities / Towns
| Ainsworth City (567) | Brighton City (652) | Coppock City (47) |
| Crawfordsville City (264) | Kalona City (2,363) | Riverside City (993) |
| Washington City (7,266) | Wellman City (1,408) | West Chester City (146) |
Washington County Zip Codes
| 52201 (1,267) | 52247 (5,645) | 52248 (1,815) |
| 52327 (3,012) | 52353 (9,173) | 52356 (2,656) |
| 52359 (279) | 52540 (1,420) | 52585 (988) |
| 52621 (668) | 52641 (12,357) | 52654 (1,728) |