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County ProfileIA

Poweshiek County

Population: 18,662 · 8 ZIP codes

Demographics

Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.

People
Total population
18,662
People
Median age
41
Housing
Total households
7,804
Income
Median household income
$67,391
Housing
Total housing units
8,975
Employment
Employment rate
59.9%
Education
Bachelor’s degree or higher
27.3%
Healthcare
Insured population
96.1%
County details
Local time 01:51:23(CT)
NamePoweshiek
Total ZIP codes8total
ZIP codes (by type)
8 Standard
Area code319, 641
TimezoneCentral Time (CT)
Coordinates41.6846421, -92.5229344
Land area584.9 sq miles(1,515 km²)

Map of Poweshiek county, Iowa with ZIP codes

Map of Poweshiek County, Iowa and ZIP codes

Cities and Communities in Poweshiek County

Compare the largest cities in Poweshiek County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.

CityPopulation
Median incomeHousehold
ZIP codes
Grinnell9,564$65,3201ZIPs
Brooklyn1,502$73,4381ZIPs
Montezuma1,442$65,6601ZIPs
Malcom270$76,7501ZIPs
Deep River249$83,1251ZIPs
Searsboro129$66,2501ZIPs
Hartwick92$83,7501ZIPs
Guernsey63$70,8331ZIPs

Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.

ZIP Codes in Poweshiek County

Review the most populated postal areas across Poweshiek County. Use the ranking below to compare resident density and demographic scales between the county's major zones.

ZIPCity
Median incomeHousehold
Population (ZIP)
50112Grinnell$67,07811,849
50171Montezuma$65,0002,703
52211Brooklyn$73,9222,592
50157Malcom$115,000699
52222Deep River$81,964635
50242Searsboro$67,104411
52221Guernsey$86,473224
52232Hartwick$99,391181

Data Sources & Citations

The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:

  • United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
  • United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS