- Location: Franklin County, Missouri
- Legal status: Third-class city
- Population: 13,243 (Change since 1990: +23.7%)
- Name origin: George Washington
- Located near the MO 47 crossing of the Missouri River
- Latitude: 38°33'29" N (+38.5581)
- Longitude: 91°00'43" W (-91.0119)
- Civil township: Washington
- Land area: 8.5 square miles
- Water area: 0.49 square miles (315.7 acres)
As the crow flies, Washington is...
| Year | Population | Percent change |
|---|
| 1900 | 3,015 | -- |
| 1910 | 3,670 | +21.7% |
| 1920 | 3,132 | -14.7% |
| 1930 | 5,918 | +89.0% |
| 1940 | 6,756 | +14.2% |
| 1950 | 6,850 | +1.4% |
| 1960 | 7,961 | +16.2% |
| 1970 | 8,499 | +6.8% |
| 1980 | 9,251 | +8.8% |
| 1990 | 10,704 | +15.7% |
| 2000 | 13,243 | +23.7% |