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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Saint Clair, MO

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Area Code(s):636
Timezone(s):Central (GMT -06:00)
City Population:4,724 (More Details)
CBSA:St. Louis, MO-IL
Congressional District(s):02
Land Area:923 square miles (county)
Water Area:8 square miles (county)

1 ZIP Code

Saint Clair, MO ZIP Code Boundaries

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Saint Clair, MO Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Saint Clair, MO Demographic Information *

Total population**4,724
Male population2,225
Female population2,499
Median age (years)33.1
White Population4,579
Black Population48
Indian Population15
Asian Population3
Hawaiian Population2
Hispanic Population59
Median age (Male)30.9
Median age (Female)35.9
Total households1,908
Family households (families)1,136
Average household size2.43
Average family size3.11
Total housing units2,142
* Demographic data is based on 2010 Census for the City of SAINT CLAIR.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],