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City Profile

Keystone, Iowa

Population: 599 · 1 ZIP code

Demographics

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

People
Total population
599
People
Median age
43.5
Housing
Total households
270
Income
Median household income
$67,500
Housing
Total housing units
281
Employment
Employment rate
51.1%
Education
Bachelor’s degree or higher
22.2%
Healthcare
Insured population
96.5%
City details
Local time 04:40:57(CT)
LocationKeystone, IA
Population (ZIP areas)912(sum of local ZIP code populations)
Total ZIP codes1total
ZIP codes (by type)
1 Standard
CountyBenton
Area code
319
TimezoneCentral Time (CT)
Coordinates42.0120083, -92.2051685
Land area49.9 sq miles(129,201,409 m²)

Map of Keystone, Iowa with ZIP codes

Map of Keystone, Iowa and ZIP codes

ZIP Codes in Keystone

Explore the ZIP codes that make up Keystone. Analyze key demographics and population stats for the region using the comprehensive table below.

ZIPType
Median incomeHousehold
Population (ZIP)
52249Standard$75,417912

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

ZIP type legend

  • Standard: residential and business delivery areas
  • PO BOX: primarily post office boxes; population may be unavailable
  • Unique: high-volume organizations (universities, agencies, etc.)

Nearby cities

Other cities near Keystone, IA.

Elberon, IAVan Horne, IALuzerne, IABlairstown, IAGarrison, IAVining, IABelle Plaine, IADysart, IA

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