Lyon County, Iowa
Located in Iowa, Lyon County has a population of 12,162 residents and a median age of 38.2 years, making it the #2,342 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 5.3%. The median home value is $230,000, and the median household income is $76,746, which is 2% above the national median.
Demographics
Lyon County has a population of 12,162, making it the #2,342 most populous county in the US. The median age is 38.2 years, which is 1.8% below 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 Lyon County is $76,746, ranking #738 out of 3,222 counties — 2.1% above the national median. The poverty rate is 5.3% and unemployment stands at 2.3%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Lyon County is $230,000 (-18.4% vs national). Renters pay a median of $843/mo and the homeownership rate is 80.9%.
Median Home Value Trend
Rankings →Household Type
Education
In Lyon County, 20.4% of adults age 25+ hold a bachelor's degree or higher, which is 39.4% below the national average, ranking #1,929 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Lyon County is 82.5 years. 13.8% of adults report poor or fair health and 5.8% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
15.7% of adults in Lyon County smoke , 38.5% are obese , and 25.3% report excessive drinking.
Adult Smoking Trend
Safety
. Motor vehicle deaths occur at a rate of 13.2 per 100,000.
Motor Vehicle Deaths Trend
Families & Children
8.7% of children in Lyon County live in poverty . The teen birth rate is 5.8 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Lyon County is 82.6%. The mean commute time is 20.5 min, which is 25.6% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Lyon County voted Republican with a margin of 69.9%. The vote was 14.6% Dem / 84.5% Rep. Compared to 2020, the margin shifted 2.2 toward Republicans .
Vote Share Over Time
About Lyon County, Iowa
Lyon County, Iowa has a total population of 12,162, making it the 2,342nd most populous county in the United States. The median age in Lyon County is 38.2 years, which is 1.8% below the national median of 38.9 years.
The median household income in Lyon County is $76,746, which ranks #738 of 3,222 counties nationwide. This is 2.1% above the national median of $75,149. The poverty rate is 5.3%, lower than the national rate of 12.6%. The unemployment rate stands at 2.3%.
The median home value in Lyon County is $230,000, 18.4% below the national median. Renters in Lyon County pay a median gross rent of $843 per month. The homeownership rate is 80.9%, compared to the national rate of 64.4%.
In Lyon County, 20.4% of residents aged 25 and older hold a bachelor's degree or higher, 39.4% below the national average of 33.7%. Health insurance coverage stands at 96.0% of the population. The average commute time for workers is 20.5 min.
Lyon County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 93.4% of the population, followed by Hispanic or Latino (3.9%) and Two or More Races (1.8%).
All data for Lyon 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.