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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Erwin, SD

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Area Code(s):605
Timezone(s):Central (GMT -06:00)
City Population:45 (More Details)
Congressional District(s):No Districts
Land Area:832 square miles (county)
Water Area:32 square miles (county)

1 ZIP Code

Erwin, SD ZIP Code Boundaries

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Erwin, SD Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases
57233Standard118100.00%SPIRIT LAKE

Erwin, SD Demographic Information *

Total population**45
Male population23
Female population22
Median age (years)59.5
White Population44
Black Population0
Indian Population0
Asian Population0
Hawaiian Population0
Hispanic Population3
Median age (Male)58.5
Median age (Female)62
Total households22
Family households (families)15
Average household size2.05
Average family size2.53
Total housing units29
* Demographic data is based on 2010 Census for the City of ERWIN.
** 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],