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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Crystal Lake, IA

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Counties:HANCOCK, IA
Area Code(s):641
Timezone(s):Central (GMT -06:00)
City Population:250 (More Details)
Congressional District(s):04
Land Area:571 square miles (county)
Water Area:2 square miles (county)

1 ZIP Code

Crystal Lake, IA ZIP Code Boundaries

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Crystal Lake, IA Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases
50432P.O. Box252100.00%

Crystal Lake, IA Demographic Information *

Total population**250
Male population121
Female population129
Median age (years)47.8
White Population243
Black Population4
Indian Population1
Asian Population0
Hawaiian Population0
Hispanic Population10
Median age (Male)48.5
Median age (Female)47.5
Total households121
Family households (families)69
Average household size2.07
Average family size2.65
Total housing units140
* Demographic data is based on 2010 Census for the City of CRYSTAL LAKE.
** 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],