Peoria County, Illinois
Located in Illinois, Peoria County has a population of 179,645 residents and a median age of 38.1 years, making it the #383 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 15.7%. The median home value is $158,500, and the median household income is $65,108, which is 13% below the national median.
Demographics
Peoria County has a population of 179,645, making it the #383 most populous county in the US. The median age is 38.1 years, which is 2.1% below 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 Peoria County is $65,108, ranking #1,626 out of 3,222 counties — 13.4% below the national median. The poverty rate is 15.7% and unemployment stands at 6.2%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Peoria County is $158,500 (-43.8% vs national). Renters pay a median of $993/mo and the homeownership rate is 67.0%.
Median Home Value Trend
Rankings →Household Type
Education
In Peoria County, 34.9% of adults age 25+ hold a bachelor's degree or higher, which is 3.5% above the national average, ranking #469 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Peoria County is 75.3 years. 18.1% of adults report poor or fair health and 5.8% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
16.5% of adults in Peoria County smoke , 35.6% are obese , and 20.2% report excessive drinking. The drug overdose death rate is 27.6 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Peoria County is 11.9 per 100,000 and the suicide rate is 15.0 per 100,000. Motor vehicle deaths occur at a rate of 10.6 per 100,000.
Homicide Rate Trend
Families & Children
22.1% of children in Peoria County live in poverty and the infant mortality rate is 8.5 per 1,000 live births. The teen birth rate is 26.3 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Peoria County is 62.9%. The mean commute time is 21.3 min, which is 22.9% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Peoria County voted Democratic with a margin of 4.6%. The vote was 51.5% Dem / 46.9% Rep. Compared to 2020, the margin shifted 1.7 toward Republicans .
Vote Share Over Time
About Peoria County, Illinois
Peoria County, Illinois has a total population of 179,645, making it the 383rd most populous county in the United States. The median age in Peoria County is 38.1 years, which is 2.1% below the national median of 38.9 years.
The median household income in Peoria County is $65,108, which ranks #1,626 of 3,222 counties nationwide. This is 13.4% below the national median of $75,149. The poverty rate is 15.7%, higher than the national rate of 12.6%. The unemployment rate stands at 6.2%.
The median home value in Peoria County is $158,500, 43.8% below the national median. Renters in Peoria County pay a median gross rent of $993 per month. The homeownership rate is 67.0%, compared to the national rate of 64.4%.
In Peoria County, 34.9% of residents aged 25 and older hold a bachelor's degree or higher, 3.5% above the national average of 33.7%. Health insurance coverage stands at 94.2% of the population. The average commute time for workers is 21.3 min.
Peoria County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 66.1% of the population, followed by Black (non-Hispanic) (17.2%) and Hispanic or Latino (6.0%).
All data for Peoria 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.