ZIP Code 63090 – Washington, MO
Washington, Missouri · Franklin County · Central time
| ZIP code | 63090 |
|---|---|
| City | Washington |
| State | Missouri |
| County | Franklin County |
| Population | 23,258 |
| Time zone | Central · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 81.54 sq mi |
| Center (lat, long) | 38.5355, -91.0487 |
Area codes in this area
These are the area codes that most often serve ZIP 63090 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Map
Nearby ZIP codes
About ZIP 63090
ZIP code 63090 is assigned to Washington, Missouri. It lies in Franklin County. Its Census area covers about 81.54 square miles of land. The closest neighboring ZIP is 63342 (Dutzow), about 5.6 miles away.
Every address in 63090 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.
Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources