County · Missouri · United States
St. Louis County ZIP codes
44 ZIP codes · 14 cities · FIPS 29189
Key facts
- State
- Missouri (MO)
- FIPS code
- 29189
- Population
- 996,618
- Median household income
- $81,340
- Median age
- 40.2
- Land area
- 507.9 sq mi (1,315.4 km²)
- Population density
- 1,962 / sq mi
- Area codes
- 314, 557, 636, 816
Cities and ZIP codes in St. Louis County (14)
| City | ZIP codes |
|---|---|
| Saint Louis | 63105, 63114, 63117, 63119, 63121, 63122, 63123, 63124, 63125, 63126, 63127, 63128, 63129, 63130, 63131, 63132, 63133, 63134, 63135, 63136, 63137, 63138, 63140, 63141, 63143, 63144, 63146 |
| Florissant | 63031, 63033, 63034 |
| Ballwin | 63011, 63021 |
| Chesterfield | 63005, 63017 |
| Bridgeton | 63044 |
| Earth City | 63045 |
| Eureka | 63025 |
| Fenton | 63026 |
| Glencoe | 63038 |
| Grover | 63040 |
| Hazelwood | 63042 |
| Maryland Heights | 63043 |
| Saint Ann | 63074 |
| Valley Park | 63088 |
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.