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ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

ZIP Codes for City of Eureka, KS

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Area Code(s):620
Timezone(s):Central (GMT -06:00)
City Population:2,633 (More Details)
Congressional District(s):04
Land Area:1,143 square miles (county)
Water Area:9 square miles (county)

1 ZIP Code

Eureka, KS ZIP Code Boundaries

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Eureka, KS Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Eureka, KS Demographic Information *

Total population**2,633
Male population1,261
Female population1,372
Median age (years)43.2
White Population2,506
Black Population6
Indian Population24
Asian Population11
Hawaiian Population0
Hispanic Population139
Median age (Male)40.5
Median age (Female)45.5
Total households1,171
Family households (families)663
Average household size2.17
Average family size2.86
Total housing units1,410
* Demographic data is based on 2010 Census for the City of EUREKA.
** 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],