Zip Code 63131 — Saint Louis, MO

ZIP Code 63131 is associated with Saint Louis, MO, in St. Louis County. The listed population estimate is 17,935; estimated density is 508.1 people per square mile. Among records with population estimates, it ranks #35 of 61 in St. Louis County and #111 of 1,021 in MO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (38.617200, -90.443650)

Data MetricLocal Statistic
Postal / Zip Code63131
Primary CitySaint Louis
State / ProvinceMO
CountySt. Louis
Total Population17,935
Population Density508.1 people/sq mi
TimezoneAmerica/Chicago

How 63131 Compares

MetricZIP 63131St. Louis County recordsMO records
Population estimate17,9351,308,579 (sum)6,191,989 (sum)
Population Density508.1 /sq mi----
County population rank#35 of 61----
State population rank#111 of 1,021----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in MO

ZIP CodeCityDistancePopulation estimate
ZIP 63141Saint Louis2.9 mi20,932
ZIP 63122Saint Louis2.9 mi41,634
ZIP 63124Saint Louis3.7 mi10,839
ZIP 63144Saint Louis5.2 mi9,505
ZIP 63119Saint Louis5.4 mi34,181

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →