Greene County, Illinois
Located in Illinois, Greene County has a population of 11,683 residents and a median age of 43.4 years, making it the #2,376 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 14.3%. The median home value is $95,200, and the median household income is $62,192, which is 17% below the national median.
Demographics
Greene County has a population of 11,683, making it the #2,376 most populous county in the US. The median age is 43.4 years, which is 11.6% 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 Greene County is $62,192, ranking #1,877 out of 3,222 counties — 17.2% below the national median. The poverty rate is 14.3% and unemployment stands at 4.9%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Greene County is $95,200 (-66.2% vs national). Renters pay a median of $754/mo and the homeownership rate is 78.2%.
Median Home Value Trend
Rankings →Household Type
Education
In Greene County, 19.0% of adults age 25+ hold a bachelor's degree or higher, which is 43.7% below the national average, ranking #2,188 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Greene County is 73.6 years. 18.9% of adults report poor or fair health and 6.8% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
18.8% of adults in Greene County smoke , 37.5% are obese , and 21.7% report excessive drinking. The drug overdose death rate is 26.7 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 21.3 per 100,000. Motor vehicle deaths occur at a rate of 16.9 per 100,000.
Suicide Rate Trend
Families & Children
18.4% of children in Greene County live in poverty . The teen birth rate is 18.6 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Greene County is 60.8%. The mean commute time is 32.4 min, which is 17.3% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Greene County voted Republican with a margin of 57.7%. The vote was 20.2% Dem / 77.9% Rep. Compared to 2020, the margin shifted 2.8 toward Republicans .
Vote Share Over Time
About Greene County, Illinois
Greene County, Illinois has a total population of 11,683, making it the 2,376th most populous county in the United States. The median age in Greene County is 43.4 years, which is 11.6% above the national median of 38.9 years.
The median household income in Greene County is $62,192, which ranks #1,877 of 3,222 counties nationwide. This is 17.2% below the national median of $75,149. The poverty rate is 14.3%, higher than the national rate of 12.6%. The unemployment rate stands at 4.9%.
The median home value in Greene County is $95,200, 66.2% below the national median. Renters in Greene County pay a median gross rent of $754 per month. The homeownership rate is 78.2%, compared to the national rate of 64.4%.
In Greene County, 19.0% of residents aged 25 and older hold a bachelor's degree or higher, 43.7% below the national average of 33.7%. Health insurance coverage stands at 95.9% of the population. The average commute time for workers is 32.4 min.
Greene County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 95.8% of the population, followed by Two or More Races (1.6%) and Hispanic or Latino (1.1%).
All data for Greene 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.