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County ProfileIA

Monona County

Population: 8,751 · 9 ZIP codes

Demographics

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

People
Total population
8,751
People
Median age
43.7
Housing
Total households
3,878
Income
Median household income
$68,377
Housing
Total housing units
4,372
Employment
Employment rate
60%
Education
Bachelor’s degree or higher
19.6%
Healthcare
Insured population
96.1%
County details
Local time 01:09:52(CT)
NameMonona
Total ZIP codes9total
ZIP codes (by type)
9 Standard
Area code712
TimezoneCentral Time (CT)
Coordinates42.0494317, -95.9565661
Land area694.1 sq miles(1,797.6 km²)

Map of Monona county, Iowa with ZIP codes

Map of Monona County, Iowa and ZIP codes

Cities and Communities in Monona County

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

CityPopulation
Median incomeHousehold
ZIP codes
Onawa2,906$62,1431ZIPs
Mapleton1,165$55,2081ZIPs
Whiting745$73,3331ZIPs
Ute338$55,3411ZIPs
Blencoe233$86,8751ZIPs
Moorhead199$45,0001ZIPs
Soldier184$56,2501ZIPs
Castana107$55,4691ZIPs
Rodney45$51,5631ZIPs

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

ZIP Codes in Monona County

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

ZIPCity
Median incomeHousehold
Population (ZIP)
51040Onawa$71,1793,537
51034Mapleton$66,3751,698
51063Whiting$80,7501,032
51060Ute$52,500546
51558Moorhead$77,417518
51010Castana$89,063421
51572Soldier$69,500360
51523Blencoe$82,625358
51051Rodney$51,56359

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