Brown County, Illinois
Located in Illinois, Brown County has a population of 6,322 residents and a median age of 41.0 years, making it the #2,789 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 9.2%. The median home value is $150,300, and the median household income is $67,917, which is 10% below the national median.
Demographics
Brown County has a population of 6,322, making it the #2,789 most populous county in the US. The median age is 41.0 years, which is 5.4% 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 Brown County is $67,917, ranking #1,346 out of 3,222 counties — 9.6% below the national median. The poverty rate is 9.2% and unemployment stands at 3.1%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Brown County is $150,300 (-46.7% vs national). Renters pay a median of $698/mo and the homeownership rate is 71.8%.
Median Home Value Trend
Rankings →Household Type
Education
In Brown County, 12.6% of adults age 25+ hold a bachelor's degree or higher, which is 62.7% below the national average, ranking #3,063 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Brown County is 77.9 years. 21.4% of adults report poor or fair health and 3.8% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
19.6% of adults in Brown County smoke , 40.6% are obese , and 20.6% report excessive drinking.
Adult Smoking Trend
Safety
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Families & Children
11.8% of children in Brown County live in poverty . The teen birth rate is 14.8 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Brown County is 47.0%. The mean commute time is 18.3 min, which is 33.6% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Brown County voted Republican with a margin of 59.9%. The vote was 19% Dem / 78.9% Rep. Compared to 2020, the margin shifted 2.6 toward Republicans .
Vote Share Over Time
About Brown County, Illinois
Brown County, Illinois has a total population of 6,322, making it the 2,789th most populous county in the United States. The median age in Brown County is 41.0 years, which is 5.4% above the national median of 38.9 years.
The median household income in Brown County is $67,917, which ranks #1,346 of 3,222 counties nationwide. This is 9.6% below the national median of $75,149. The poverty rate is 9.2%, lower than the national rate of 12.6%. The unemployment rate stands at 3.1%.
The median home value in Brown County is $150,300, 46.7% below the national median. Renters in Brown County pay a median gross rent of $698 per month. The homeownership rate is 71.8%, compared to the national rate of 64.4%.
In Brown County, 12.6% of residents aged 25 and older hold a bachelor's degree or higher, 62.7% below the national average of 33.7%. Health insurance coverage stands at 97.9% of the population. The average commute time for workers is 18.3 min.
Brown County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 74.1% of the population, followed by Black (non-Hispanic) (17.8%) and Hispanic or Latino (6.7%).
All data for Brown 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.