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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Humboldt, IA

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Area Code(s):515
Timezone(s):Central (GMT -06:00)
City Population:4,690 (More Details)
Congressional District(s):04
Land Area:434 square miles (county)
Water Area:1 square miles (county)

1 ZIP Code

Humboldt, IA ZIP Code Boundaries

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Humboldt, IA Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Humboldt, IA Demographic Information *

Total population**4,690
Male population2,237
Female population2,453
Median age (years)45.3
White Population4,452
Black Population28
Indian Population5
Asian Population21
Hawaiian Population0
Hispanic Population235
Median age (Male)40.6
Median age (Female)48.4
Total households2,091
Family households (families)1,250
Average household size2.18
Average family size2.8
Total housing units2,246
* Demographic data is based on 2010 Census for the City of HUMBOLDT.
** 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],