ZIP Code 63121
Saint Louis · St. Louis, Missouri
63121 is the ZIP code of Saint Louis in St. Louis, Missouri, United States.
- ZIP Code
- 63121
- County
- St. Louis
- State
- Missouri
- Country
- United States
Place with ZIP code 63121
| Place | County | Location |
|---|---|---|
| Saint Louis | St. Louis | 38.707, -90.305 |
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 63121?
Saint Louis.
Which county and state is 63121 in?
St. Louis, Missouri, United States.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.