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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Peosta, IA

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Counties:DUBUQUE, IA
Area Code(s):563
Timezone(s):Central (GMT -06:00)
City Population:1,377 (More Details)
CBSA:Dubuque, IA
Congressional District(s):02
Land Area:608 square miles (county)
Water Area:8 square miles (county)

1 ZIP Code

Peosta, IA ZIP Code Boundaries

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Peosta, IA Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Peosta, IA Demographic Information *

Total population**1,377
Male population670
Female population707
Median age (years)30.2
White Population1,335
Black Population28
Indian Population2
Asian Population2
Hawaiian Population0
Hispanic Population12
Median age (Male)30.3
Median age (Female)30.2
Total households438
Family households (families)369
Average household size3.14
Average family size3.46
Total housing units456
* Demographic data is based on 2010 Census for the City of PEOSTA.
** 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],