Knox County, Indiana
Located in Indiana, Knox County has a population of 36,007 residents and a median age of 39.0 years, making it the #1,316 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 $137,700, and the median household income is $61,237, which is 19% below the national median.
Demographics
Knox County has a population of 36,007, making it the #1,316 most populous county in the US. The median age is 39.0 years, which is 0.3% 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 Knox County is $61,237, ranking #1,962 out of 3,222 counties — 18.5% 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 Knox County is $137,700 (-51.2% vs national). Renters pay a median of $796/mo and the homeownership rate is 67.8%.
Median Home Value Trend
Rankings →Household Type
Education
In Knox County, 19.1% of adults age 25+ hold a bachelor's degree or higher, which is 43.4% below the national average, ranking #2,171 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Knox County is 73.7 years. 18.3% of adults report poor or fair health and 7.8% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
18.4% of adults in Knox County smoke , 38.2% are obese , and 18.7% report excessive drinking. The drug overdose death rate is 12.9 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Knox County is 3.9 per 100,000 and the suicide rate is 18.4 per 100,000. Motor vehicle deaths occur at a rate of 20.2 per 100,000.
Homicide Rate Trend
Families & Children
17.2% of children in Knox County live in poverty and the infant mortality rate is 7.7 per 1,000 live births. The teen birth rate is 22.4 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Knox County is 55.9%. The mean commute time is 21.9 min, which is 20.8% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Knox County voted Republican with a margin of 50.4%. The vote was 24% Dem / 74.4% Rep. Compared to 2020, the margin shifted 3.0 toward Republicans .
Vote Share Over Time
About Knox County, Indiana
Knox County, Indiana has a total population of 36,007, making it the 1,316th most populous county in the United States. The median age in Knox County is 39.0 years, which is 0.3% above the national median of 38.9 years.
The median household income in Knox County is $61,237, which ranks #1,962 of 3,222 counties nationwide. This is 18.5% 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 Knox County is $137,700, 51.2% below the national median. Renters in Knox County pay a median gross rent of $796 per month. The homeownership rate is 67.8%, compared to the national rate of 64.4%.
In Knox County, 19.1% of residents aged 25 and older hold a bachelor's degree or higher, 43.4% below the national average of 33.7%. Health insurance coverage stands at 94.0% of the population. The average commute time for workers is 21.9 min.
Knox County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 89.4% of the population, followed by Two or More Races (4.8%) and Hispanic or Latino (3.0%).
All data for Knox 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.