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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Winfield, IA

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Counties:HENRY, IA
Area Code(s):319
Timezone(s):Central (GMT -06:00)
City Population:1,134 (More Details)
Congressional District(s):01
Land Area:434 square miles (county)
Water Area:2 square miles (county)

1 ZIP Code

Winfield, IA ZIP Code Boundaries

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Winfield, IA Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Winfield, IA Demographic Information *

Total population**1,134
Male population559
Female population575
Median age (years)39.4
White Population1,098
Black Population12
Indian Population2
Asian Population6
Hawaiian Population0
Hispanic Population16
Median age (Male)33.9
Median age (Female)41.6
Total households437
Family households (families)302
Average household size2.5
Average family size3.02
Total housing units482
* Demographic data is based on 2010 Census for the City of WINFIELD.
** 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],