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ZIP Code Database - Facts & Stats

Data Last Updated: January 1, 2023

ZIP Codes for City of Waterloo, IA

Waterloo, IA Covers 5 ZIP Codes

ZIP CodeTypeCountyPopulation
ZIP Code 50701StandardBlack Hawk30,324
ZIP Code 50702StandardBlack Hawk19,970
ZIP Code 50703StandardBlack Hawk19,863
ZIP Code 50704P.O. BoxBlack Hawk0
ZIP Code 50707StandardBlack Hawk8,509

Timezone(s):Central (GMT -06:00)
Population:68,406 (More Details)
Male Population:33,138
Female Population:35,268
Median Age:36
ZIP Codes:5
Area Codes:1
Total Area:573 square miles (county)
Land Area:566 square miles (county)
Water Area:7 square miles (county)

Waterloo, IA Demographic Information *

Total population68,406
Male population33,138
Female population35,268
Median age (years)35.9
White Population52,864
Black Population10,606
Indian Population200
Asian Population722
Hawaiian Population197
Hispanic Population3,827
Median age (Male)34.6
Median age (Female)37.3
Total households28,607
Family households (families)17,233
Average household size2.35
Average family size2.95
Total housing units30,723
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 1/1/2023],
  2. Internal Data Creation [Last Updated: 1/1/2023],
  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],