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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of North Sioux City, SD

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Counties:UNION, SD
Area Code(s):605
Timezone(s):Central (GMT -06:00)
City Population:2,530 (More Details)
CBSA:Sioux City, IA-NE-SD
Congressional District(s):No Districts
Land Area:461 square miles (county)
Water Area:6 square miles (county)

1 ZIP Code

North Sioux City, SD ZIP Code Boundaries

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North Sioux City, SD Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases
57049Standard5,789100.00%DAKOTA DUNES, MCCOOK LAKE, N SIOUX CITY

North Sioux City, SD Demographic Information *

Total population**2,530
Male population1,239
Female population1,291
Median age (years)37.4
White Population2,365
Black Population15
Indian Population33
Asian Population14
Hawaiian Population3
Hispanic Population96
Median age (Male)36.8
Median age (Female)38.2
Total households1,073
Family households (families)679
Average household size2.36
Average family size2.93
Total housing units1,146
* Demographic data is based on 2010 Census for the City of NORTH SIOUX CITY.
** 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],