Sangamon County, Illinois
Located in Illinois, Sangamon County has a population of 194,947 residents and a median age of 41.0 years, making it the #360 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 13.1%. The median home value is $176,300, and the median household income is $75,357, which is 0% above the national median.
Demographics
Sangamon County has a population of 194,947, making it the #360 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 Sangamon County is $75,357, ranking #821 out of 3,222 counties — 0.3% above the national median. The poverty rate is 13.1% and unemployment stands at 5.4%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Sangamon County is $176,300 (-37.5% vs national). Renters pay a median of $983/mo and the homeownership rate is 71.3%.
Median Home Value Trend
Rankings →Household Type
Education
In Sangamon County, 36.6% of adults age 25+ hold a bachelor's degree or higher, which is 8.6% above the national average, ranking #396 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Sangamon County is 76.8 years. 16.6% of adults report poor or fair health and 5.2% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
16.2% of adults in Sangamon County smoke , 38.3% are obese , and 20.6% report excessive drinking. The drug overdose death rate is 32.8 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Sangamon County is 6.7 per 100,000 and the suicide rate is 13.2 per 100,000. Motor vehicle deaths occur at a rate of 10.1 per 100,000.
Homicide Rate Trend
Families & Children
16.7% of children in Sangamon County live in poverty and the infant mortality rate is 7.5 per 1,000 live births. The teen birth rate is 18.9 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Sangamon County is 70.0%. The mean commute time is 21.8 min, which is 21.1% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Sangamon County voted Republican with a margin of 5.0%. The vote was 46.6% Dem / 51.6% Rep. Compared to 2020, the margin shifted 0.6 toward Republicans .
Vote Share Over Time
About Sangamon County, Illinois
Sangamon County, Illinois has a total population of 194,947, making it the 360th most populous county in the United States. The median age in Sangamon County is 41.0 years, which is 5.4% above the national median of 38.9 years.
The median household income in Sangamon County is $75,357, which ranks #821 of 3,222 counties nationwide. This is 0.3% above the national median of $75,149. The poverty rate is 13.1%, higher than the national rate of 12.6%. The unemployment rate stands at 5.4%.
The median home value in Sangamon County is $176,300, 37.5% below the national median. Renters in Sangamon County pay a median gross rent of $983 per month. The homeownership rate is 71.3%, compared to the national rate of 64.4%.
In Sangamon County, 36.6% of residents aged 25 and older hold a bachelor's degree or higher, 8.6% above the national average of 33.7%. Health insurance coverage stands at 96.4% of the population. The average commute time for workers is 21.8 min.
Sangamon County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 77.3% of the population, followed by Black (non-Hispanic) (12.5%) and Two or More Races (4.3%).
All data for Sangamon 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.