Carroll County, Illinois
Located in Illinois, Carroll County has a population of 15,576 residents and a median age of 45.4 years, making it the #2,123 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 14.2%. The median home value is $114,500, and the median household income is $60,758, which is 19% below the national median.
Demographics
Carroll County has a population of 15,576, making it the #2,123 most populous county in the US. The median age is 45.4 years, which is 16.7% 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 Carroll County is $60,758, ranking #2,013 out of 3,222 counties — 19.1% below the national median. The poverty rate is 14.2% and unemployment stands at 3.1%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Carroll County is $114,500 (-59.4% vs national). Renters pay a median of $818/mo and the homeownership rate is 77.2%.
Median Home Value Trend
Rankings →Household Type
Education
In Carroll County, 17.8% of adults age 25+ hold a bachelor's degree or higher, which is 47.3% below the national average, ranking #2,390 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Carroll County is 76.7 years. 16.5% of adults report poor or fair health and 7.6% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
15.4% of adults in Carroll County smoke , 36.0% are obese , and 21.9% report excessive drinking.
Adult Smoking Trend
Safety
. Motor vehicle deaths occur at a rate of 17.4 per 100,000.
Motor Vehicle Deaths Trend
Families & Children
16.5% of children in Carroll County live in poverty . The teen birth rate is 14.1 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Carroll County is 69.1%. The mean commute time is 26.5 min, which is 4.1% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Carroll County voted Republican with a margin of 31.7%. The vote was 33.2% Dem / 64.9% Rep. Compared to 2020, the margin shifted 2.3 toward Republicans .
Vote Share Over Time
About Carroll County, Illinois
Carroll County, Illinois has a total population of 15,576, making it the 2,123rd most populous county in the United States. The median age in Carroll County is 45.4 years, which is 16.7% above the national median of 38.9 years.
The median household income in Carroll County is $60,758, which ranks #2,013 of 3,222 counties nationwide. This is 19.1% below the national median of $75,149. The poverty rate is 14.2%, higher than the national rate of 12.6%. The unemployment rate stands at 3.1%.
The median home value in Carroll County is $114,500, 59.4% below the national median. Renters in Carroll County pay a median gross rent of $818 per month. The homeownership rate is 77.2%, compared to the national rate of 64.4%.
In Carroll County, 17.8% of residents aged 25 and older hold a bachelor's degree or higher, 47.3% below the national average of 33.7%. Health insurance coverage stands at 94.2% of the population. The average commute time for workers is 26.5 min.
Carroll County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 87.8% of the population, followed by Hispanic or Latino (5.3%) and Black (non-Hispanic) (3.9%).
All data for Carroll 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.