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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Calmar, IA

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Area Code(s):563
Timezone(s):Central (GMT -06:00)
City Population:978 (More Details)
Congressional District(s):02
Land Area:690 square miles (county)
Water Area:0 square miles (county)

1 ZIP Code

Calmar, IA ZIP Code Boundaries

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Calmar, IA Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Calmar, IA Demographic Information *

Total population**978
Male population506
Female population472
Median age (years)34.9
White Population958
Black Population3
Indian Population0
Asian Population1
Hawaiian Population0
Hispanic Population20
Median age (Male)31.4
Median age (Female)41.6
Total households444
Family households (families)252
Average household size2.2
Average family size2.84
Total housing units492
* Demographic data is based on 2010 Census for the City of CALMAR.
** 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],