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ZIP Code Database - Facts & Stats

Data Last Updated: October 1, 2021

ZIP Codes for City of Grinnell, IA

Grinnell, IA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 50112StandardPoweshiek11,536641

Timezone(s):Central (GMT -06:00)
Population:9,218 (More Details)
Male Population:4,361
Female Population:4,857
Median Age:36
ZIP Codes:1
Area Codes:1
Total Area:586 square miles (county)
Land Area:585 square miles (county)
Water Area:1 square miles (county)

Grinnell, IA Demographic Information *

Total population9,218
Male population4,361
Female population4,857
Median age (years)35.6
White Population8,468
Black Population182
Indian Population30
Asian Population246
Hawaiian Population21
Hispanic Population292
Median age (Male)32.9
Median age (Female)38.1
Total households3,567
Family households (families)2,026
Average household size2.16
Average family size2.82
Total housing units3,844
* Demographic data is based on 2010 Census.

Grinnell, IA Other Information

  • Located in POWESHIEK County, Iowa
  • Grinnell, IA is also known as:

74 Cities within 30 miles of Grinnell, IA Products


  1. U.S. Postal Service [Last Updated: 10/1/2021],
  2. Internal Data Creation [Last Updated: 10/1/2021],
  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],