Allen County, Indiana
Located in Indiana, Allen County has a population of 392,378 residents and a median age of 36.2 years, making it the #189 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 12.5%. The median home value is $214,900, and the median household income is $70,737, which is 6% below the national median.
Demographics
Allen County has a population of 392,378, making it the #189 most populous county in the US. The median age is 36.2 years, which is 6.9% 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 Allen County is $70,737, ranking #1,144 out of 3,222 counties — 5.9% below the national median. The poverty rate is 12.5% and unemployment stands at 4.7%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Allen County is $214,900 (-23.8% vs national). Renters pay a median of $1,021/mo and the homeownership rate is 68.9%.
Median Home Value Trend
Rankings →Household Type
Education
In Allen County, 31.6% of adults age 25+ hold a bachelor's degree or higher, which is 6.3% below the national average, ranking #649 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Allen County is 75.6 years. 18.5% of adults report poor or fair health and 8.1% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
18.8% of adults in Allen County smoke , 38.3% are obese , and 18.2% report excessive drinking. The drug overdose death rate is 34.8 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Allen County is 10.3 per 100,000 and the suicide rate is 14.7 per 100,000. Motor vehicle deaths occur at a rate of 10.6 per 100,000.
Homicide Rate Trend
Families & Children
17.4% of children in Allen County live in poverty and the infant mortality rate is 7.2 per 1,000 live births. The teen birth rate is 21.6 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Allen County is 63.3%. The mean commute time is 23.8 min, which is 13.7% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Allen County voted Republican with a margin of 12.5%. The vote was 42.9% Dem / 55.4% Rep. Compared to 2020, the margin shifted 1.3 toward Republicans .
Vote Share Over Time
About Allen County, Indiana
Allen County, Indiana has a total population of 392,378, making it the 189th most populous county in the United States. The median age in Allen County is 36.2 years, which is 6.9% below the national median of 38.9 years.
The median household income in Allen County is $70,737, which ranks #1,144 of 3,222 counties nationwide. This is 5.9% below the national median of $75,149. The poverty rate is 12.5%, lower than the national rate of 12.6%. The unemployment rate stands at 4.7%.
The median home value in Allen County is $214,900, 23.8% below the national median. Renters in Allen County pay a median gross rent of $1,021 per month. The homeownership rate is 68.9%, compared to the national rate of 64.4%.
In Allen County, 31.6% of residents aged 25 and older hold a bachelor's degree or higher, 6.3% below the national average of 33.7%. Health insurance coverage stands at 91.7% of the population. The average commute time for workers is 23.8 min.
Allen County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 69.8% of the population, followed by Black (non-Hispanic) (10.5%) and Hispanic or Latino (9.0%).
All data for Allen County, Indiana 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.