Linn County, Missouri
Located in Missouri, Linn County has a population of 11,852 residents and a median age of 42.1 years, making it the #2,362 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 13.7%. The median home value is $123,300, and the median household income is $61,635, which is 18% below the national median.
Demographics
Linn County has a population of 11,852, making it the #2,362 most populous county in the US. The median age is 42.1 years, which is 8.2% 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 Linn County is $61,635, ranking #1,923 out of 3,222 counties — 18.0% below the national median. The poverty rate is 13.7% and unemployment stands at 3.1%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Linn County is $123,300 (-56.3% vs national). Renters pay a median of $620/mo and the homeownership rate is 78.5%.
Median Home Value Trend
Rankings →Household Type
Education
In Linn County, 19.2% of adults age 25+ hold a bachelor's degree or higher, which is 42.9% below the national average, ranking #2,138 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Linn County is 75.0 years. 22.1% of adults report poor or fair health and 11.3% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
23.4% of adults in Linn County smoke , 41.4% are obese , and 19.9% report excessive drinking.
Adult Smoking Trend
Safety
The suicide rate is 22.0 per 100,000. Motor vehicle deaths occur at a rate of 17.9 per 100,000.
Suicide Rate Trend
Families & Children
20.5% of children in Linn County live in poverty . The teen birth rate is 18.3 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Linn County is 62.6%. The mean commute time is 22.0 min, which is 20.3% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Linn County voted Republican with a margin of 57.3%. The vote was 20.8% Dem / 78.1% Rep. Compared to 2020, the margin shifted 3.4 toward Republicans .
Vote Share Over Time
About Linn County, Missouri
Linn County, Missouri has a total population of 11,852, making it the 2,362nd most populous county in the United States. The median age in Linn County is 42.1 years, which is 8.2% above the national median of 38.9 years.
The median household income in Linn County is $61,635, which ranks #1,923 of 3,222 counties nationwide. This is 18.0% below the national median of $75,149. The poverty rate is 13.7%, higher than the national rate of 12.6%. The unemployment rate stands at 3.1%.
The median home value in Linn County is $123,300, 56.3% below the national median. Renters in Linn County pay a median gross rent of $620 per month. The homeownership rate is 78.5%, compared to the national rate of 64.4%.
In Linn County, 19.2% of residents aged 25 and older hold a bachelor's degree or higher, 42.9% below the national average of 33.7%. Health insurance coverage stands at 90.7% of the population. The average commute time for workers is 22.0 min.
Linn County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 93.7% of the population, followed by Hispanic or Latino (3.0%) and Two or More Races (1.8%).
All data for Linn County, Missouri 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.