| Place Name | Washington |
| Place Type | City |
| ZIP Code(s) | 63090 |
| County | Franklin County |
| Area Code(s) | 636 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 13,979 |
| Population Growth Rate (2010-19) | 3.70% |
| Majority Ethnicity | White 97.25% |
| Metro/Micro Stats Area | St. Louis, MO-IL |
| US Congressional District(s) | Missouri 3rd |
| State House Districts | 61,109 |
| State Senate Districts | 26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.25% |
| African American | 0.07% |
| Hispanic | 0.07% |
| Asian | 0.77% |
| Native American | 0.13% |
| Hawaiin/Pacific Islander | 1.72% |