ZIP code · Saint Louis · Missouri · United States

ZIP code 63123 — Saint Louis

Name: Saint Louis (63123)
Address: Missouri, 63123, US

ZIP code 63123 serves Saint Louis, Missouri.

Postal code: 63123
Single source Value from one source, not cross-checked.
City: Saint Louis
County: St. Louis
State: Missouri
Country: United States
Coordinates: 38.5476, -90.3241 — precision estimated (postal-area centroid)
View on OpenStreetMap
Population: 49,826 (ZCTA, ACS 5-year)
Median household income: $74,187
Median age: 41

Nearby localities

63101Saint Louis
63102Saint Louis
63103Saint Louis
63104Saint Louis
63105Saint Louis
63106Saint Louis
63107Saint Louis
63108Saint Louis
63109Saint Louis
63110Saint Louis

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · census-acs5. Data generated on 2026-08-21. Methodology · Report an error on this page