Marion County, Kansas
Located in Kansas, Marion County has a population of 11,754 residents and a median age of 43.5 years, making it the #2,372 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 9.2%. The median home value is $124,200, and the median household income is $64,695, which is 14% below the national median.
Demographics
Marion County has a population of 11,754, making it the #2,372 most populous county in the US. The median age is 43.5 years, which is 11.8% 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 Marion County is $64,695, ranking #1,654 out of 3,222 counties — 13.9% below the national median. The poverty rate is 9.2% and unemployment stands at 3.4%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Marion County is $124,200 (-55.9% vs national). Renters pay a median of $727/mo and the homeownership rate is 81.3%.
Median Home Value Trend
Rankings →Household Type
Education
In Marion County, 30.4% of adults age 25+ hold a bachelor's degree or higher, which is 9.8% below the national average, ranking #734 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Marion County is 76.6 years. 14.4% of adults report poor or fair health and 11.1% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
14.2% of adults in Marion County smoke , 38.7% are obese , and 19.3% report excessive drinking.
Adult Smoking Trend
Safety
The suicide rate is 18.0 per 100,000. Motor vehicle deaths occur at a rate of 19.2 per 100,000.
Suicide Rate Trend
Families & Children
12.3% of children in Marion County live in poverty . The teen birth rate is 13.5 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Marion County is 65.7%. The mean commute time is 23.8 min, which is 13.8% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Marion County voted Republican with a margin of 49.2%. The vote was 24.3% Dem / 73.5% Rep. Compared to 2020, the margin shifted 0.4 toward Republicans .
Vote Share Over Time
About Marion County, Kansas
Marion County, Kansas has a total population of 11,754, making it the 2,372nd most populous county in the United States. The median age in Marion County is 43.5 years, which is 11.8% above the national median of 38.9 years.
The median household income in Marion County is $64,695, which ranks #1,654 of 3,222 counties nationwide. This is 13.9% below the national median of $75,149. The poverty rate is 9.2%, lower than the national rate of 12.6%. The unemployment rate stands at 3.4%.
The median home value in Marion County is $124,200, 55.9% below the national median. Renters in Marion County pay a median gross rent of $727 per month. The homeownership rate is 81.3%, compared to the national rate of 64.4%.
In Marion County, 30.4% of residents aged 25 and older hold a bachelor's degree or higher, 9.8% below the national average of 33.7%. Health insurance coverage stands at 93.2% of the population. The average commute time for workers is 23.8 min.
Marion County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 90.9% of the population, followed by Hispanic or Latino (4.2%) and Two or More Races (2.8%).
All data for Marion County, Kansas 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.