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ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

ZIP Codes for City of Millstadt, IL

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Area Code(s):618
Timezone(s):Central (GMT -06:00)
City Population:4,011 (More Details)
CBSA:St. Louis, MO-IL
Congressional District(s):12, 13
Land Area:658 square miles (county)
Water Area:16 square miles (county)

1 ZIP Code

Millstadt, IL ZIP Code Boundaries

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Millstadt, IL Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Millstadt, IL Demographic Information *

Total population**4,011
Male population1,930
Female population2,081
Median age (years)40
White Population3,953
Black Population8
Indian Population5
Asian Population11
Hawaiian Population0
Hispanic Population40
Median age (Male)37.4
Median age (Female)42.4
Total households1,645
Family households (families)1,144
Average household size2.44
Average family size2.94
Total housing units1,722
* Demographic data is based on 2010 Census for the City of MILLSTADT.
** 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],