Postal reference / United States

63143Saint Louis, Missouri

ZIP code 63143 is a United States postal code for Saint Louis, Missouri. Its county association is St. Louis County. The map reference point is at 38.6111, -90.3225.

State / territory
Missouri
Recorded place name
Saint Louis
County association
St. Louis
Estimated coordinate
38.6111, -90.3225
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ZIP prefix
631 · 68 ZIP codes share it
Data source
GeoNames postal reference, snapshot September 26, 2026

GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.

Area

Land area
2.048 sq mi (2023 Census Gazetteer)

Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.

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Other ZIP codes in Saint Louis, MO

Saint Louis has 68 ZIP codes in the reference dataset. The 28 not listed here are in the Saint Louis directory.

All Saint Louis ZIP codes

Nearby ZIP code reference points

ZIP codePlaceStateCounty associationMiles
63117Saint LouisMOSt. Louis1.4
63144Saint LouisMOSt. Louis1.5
63139Saint LouisMOSt. Louis (city)1.6
63119Saint LouisMOSt. Louis2.0
63109Saint LouisMOSt. Louis (city)2.4
63105Saint LouisMOSt. Louis2.4
63124Saint LouisMOSt. Louis3.5
63110Saint LouisMOSt. Louis (city)3.6

Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.

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