Zip Code Database List
Account Login
Find ZIP+4 of Address

Find the ZIP Code, County, and +4 of any U.S. Address

FREE ZIP Code Finder

Find info on any U.S. ZIP Code

Other FREE Lookups

Lookup ZIP Code of any City, State, County or Area Code

FREE Radius Search

Find all ZIP Codes

FREE Distance Calc

Calculate the distance between two U.S. or Canadian ZIP codes.

ZIP Code Database - Facts & Stats

Data Last Updated: December 1, 2021

ZIP Codes for City of Spencer, IA

Spencer, IA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 51301StandardClay12,691712

Timezone(s):Central (GMT -06:00)
Counties:CLAY, IA
Population:11,233 (More Details)
Male Population:5,356
Female Population:5,877
Median Age:42
ZIP Codes:1
Area Codes:1
Total Area:573 square miles (county)
Land Area:567 square miles (county)
Water Area:5 square miles (county)

Spencer, IA Demographic Information *

Total population11,233
Male population5,356
Female population5,877
Median age (years)41.5
White Population10,779
Black Population60
Indian Population32
Asian Population78
Hawaiian Population1
Hispanic Population390
Median age (Male)39
Median age (Female)44.2
Total households5,018
Family households (families)3,009
Average household size2.19
Average family size2.8
Total housing units5,431
* Demographic data is based on 2010 Census.

Spencer, IA Other Information

57 Cities within 30 miles of Spencer, IA Products


  1. U.S. Postal Service [Last Updated: 12/1/2021],
  2. Internal Data Creation [Last Updated: 12/1/2021],
  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],