Gallatin County, Illinois
Located in Illinois, Gallatin County has a population of 4,819 residents and a median age of 46.7 years, making it the #2,912 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 13.6%. The median home value is $82,900, and the median household income is $59,219, which is 21% below the national median.
Demographics
Gallatin County has a population of 4,819, making it the #2,912 most populous county in the US. The median age is 46.7 years, which is 20.1% 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 Gallatin County is $59,219, ranking #2,154 out of 3,222 counties — 21.2% below the national median. The poverty rate is 13.6% and unemployment stands at 9.2%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Gallatin County is $82,900 (-70.6% vs national). Renters pay a median of $541/mo and the homeownership rate is 77.4%.
Median Home Value Trend
Rankings →Household Type
Education
In Gallatin County, 13.6% of adults age 25+ hold a bachelor's degree or higher, which is 59.7% below the national average, ranking #2,976 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Gallatin County is 72.6 years. 20.8% of adults report poor or fair health and 6.3% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
19.9% of adults in Gallatin County smoke , 38.4% are obese , and 20.7% report excessive drinking.
Adult Smoking Trend
Safety
. Motor vehicle deaths occur at a rate of 28.8 per 100,000.
Motor Vehicle Deaths Trend
Families & Children
24.3% of children in Gallatin County live in poverty . The teen birth rate is 26.1 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Gallatin County is 68.0%. The mean commute time is 28.7 min, which is 4.1% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Gallatin County voted Republican with a margin of 53.8%. The vote was 22.2% Dem / 76% Rep. Compared to 2020, the margin shifted 1.6 toward Republicans .
Vote Share Over Time
About Gallatin County, Illinois
Gallatin County, Illinois has a total population of 4,819, making it the 2,912th most populous county in the United States. The median age in Gallatin County is 46.7 years, which is 20.1% above the national median of 38.9 years.
The median household income in Gallatin County is $59,219, which ranks #2,154 of 3,222 counties nationwide. This is 21.2% below the national median of $75,149. The poverty rate is 13.6%, higher than the national rate of 12.6%. The unemployment rate stands at 9.2%.
The median home value in Gallatin County is $82,900, 70.6% below the national median. Renters in Gallatin County pay a median gross rent of $541 per month. The homeownership rate is 77.4%, compared to the national rate of 64.4%.
In Gallatin County, 13.6% of residents aged 25 and older hold a bachelor's degree or higher, 59.7% below the national average of 33.7%. Health insurance coverage stands at 95.4% of the population. The average commute time for workers is 28.7 min.
Gallatin County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 95.0% of the population, followed by Two or More Races (1.8%) and Hispanic or Latino (1.2%).
All data for Gallatin 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.