ZIP Code 63131

63131 is one of Missouri's ZIP codes, delivering to addresses in Saint Louis, St. Louis County.

City: Saint Louis
County: St. Louis County
State: Missouri
Prefix: 631xx

Where this code sits

63131 is part of the 631xx range, the group of codes handled by one mail processing centre. Saint Louis is served by 68 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 63131 delivers to without sharing its boundary.

ZIP codes nearest 63131

The ZIP codes whose reference points sit closest to 63131.
ZIP code	Distance	Delivers to
ZIP code 63032	1.9 mi	Florissant, MO
ZIP code 63099	1.9 mi	Fenton, MO
ZIP code 63145	1.9 mi	Saint Louis, MO
ZIP code 63151	1.9 mi	Saint Louis, MO
ZIP code 63167	1.9 mi	Saint Louis, MO
ZIP code 63141	2.7 mi	Saint Louis, MO
ZIP code 63122	3.0 mi	Saint Louis, MO
ZIP code 63124	4.2 mi	Saint Louis, MO

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 63131, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 63131. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.