De Witt County, Illinois
Located in Illinois, De Witt County has a population of 15,373 residents and a median age of 43.7 years, making it the #2,135 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 10.0%. The median home value is $130,300, and the median household income is $71,678, which is 5% below the national median.
Demographics
De Witt County has a population of 15,373, making it the #2,135 most populous county in the US. The median age is 43.7 years, which is 12.3% 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 De Witt County is $71,678, ranking #1,071 out of 3,222 counties — 4.6% below the national median. The poverty rate is 10.0% and unemployment stands at 4.0%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in De Witt County is $130,300 (-53.8% vs national). Renters pay a median of $903/mo and the homeownership rate is 78.5%.
Median Home Value Trend
Rankings →Household Type
Education
In De Witt County, 23.2% of adults age 25+ hold a bachelor's degree or higher, which is 31.2% below the national average, ranking #1,479 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in De Witt County is 75.1 years. 16.4% of adults report poor or fair health and 5.7% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
16.9% of adults in De Witt County smoke , 36.5% are obese , and 22.4% report excessive drinking. The drug overdose death rate is 21.6 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 27.1 per 100,000. Motor vehicle deaths occur at a rate of 12.7 per 100,000.
Suicide Rate Trend
Families & Children
15.9% of children in De Witt County live in poverty . The teen birth rate is 19.3 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in De Witt County is 65.7%. The mean commute time is 25.0 min, which is 9.3% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, De Witt County voted Republican with a margin of 44.9%. The vote was 26.6% Dem / 71.5% Rep. Compared to 2020, the margin shifted 2.0 toward Republicans .
Vote Share Over Time
About De Witt County, Illinois
De Witt County, Illinois has a total population of 15,373, making it the 2,135th most populous county in the United States. The median age in De Witt County is 43.7 years, which is 12.3% above the national median of 38.9 years.
The median household income in De Witt County is $71,678, which ranks #1,071 of 3,222 counties nationwide. This is 4.6% below the national median of $75,149. The poverty rate is 10.0%, lower than the national rate of 12.6%. The unemployment rate stands at 4.0%.
The median home value in De Witt County is $130,300, 53.8% below the national median. Renters in De Witt County pay a median gross rent of $903 per month. The homeownership rate is 78.5%, compared to the national rate of 64.4%.
In De Witt County, 23.2% of residents aged 25 and older hold a bachelor's degree or higher, 31.2% below the national average of 33.7%. Health insurance coverage stands at 96.8% of the population. The average commute time for workers is 25.0 min.
De Witt County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 92.7% of the population, followed by Hispanic or Latino (3.5%) and Two or More Races (2.3%).
All data for De Witt County, Illinois 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.