Monona County, Iowa
Located in Iowa, Monona County has a population of 8,557 residents and a median age of 43.7 years, making it the #2,606 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 10.6%. The median home value is $142,900, and the median household income is $68,377, which is 9% below the national median.
Demographics
Monona County has a population of 8,557, making it the #2,606 most populous county in the US. The median age is 43.7 years, which is 12.3% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Monona County is $68,377, ranking #1,311 out of 3,222 counties — 9.0% below the national median. The poverty rate is 10.6% and unemployment stands at 1.6%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Monona County is $142,900 (-49.3% vs national). Renters pay a median of $855/mo and the homeownership rate is 75.7%.
Median Home Value Trend
Rankings →Household Type
Education
In Monona County, 19.6% of adults age 25+ hold a bachelor's degree or higher, which is 41.8% below the national average, ranking #2,066 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Monona County is 75.0 years. 16.9% of adults report poor or fair health and 5.6% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
19.6% of adults in Monona County smoke , 40.9% are obese , and 23.8% report excessive drinking.
Adult Smoking Trend
Safety
. Motor vehicle deaths occur at a rate of 31.4 per 100,000.
Motor Vehicle Deaths Trend
Families & Children
17.0% of children in Monona County live in poverty . The teen birth rate is 16.4 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Monona County is 68.9%. The mean commute time is 24.2 min, which is 12.2% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Monona County voted Republican with a margin of 45.4%. The vote was 26.8% Dem / 72.2% Rep. Compared to 2020, the margin shifted 6.5 toward Republicans .
Vote Share Over Time
About Monona County, Iowa
Monona County, Iowa has a total population of 8,557, making it the 2,606th most populous county in the United States. The median age in Monona County is 43.7 years, which is 12.3% above the national median of 38.9 years.
The median household income in Monona County is $68,377, which ranks #1,311 of 3,222 counties nationwide. This is 9.0% below the national median of $75,149. The poverty rate is 10.6%, lower than the national rate of 12.6%. The unemployment rate stands at 1.6%.
The median home value in Monona County is $142,900, 49.3% below the national median. Renters in Monona County pay a median gross rent of $855 per month. The homeownership rate is 75.7%, compared to the national rate of 64.4%.
In Monona County, 19.6% of residents aged 25 and older hold a bachelor's degree or higher, 41.8% below the national average of 33.7%. Health insurance coverage stands at 96.1% of the population. The average commute time for workers is 24.2 min.
Monona County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 92.8% of the population, followed by Two or More Races (3.8%) and Hispanic or Latino (2.7%).
All data for Monona County, Iowa comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.