Peoria County's 2026 population is estimated at 181,420, reflecting a 0.5% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Peoria County is the 12th largest county in Illinois. The 2010 population was 186,224 and has grown -2.58% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.1 years
Female: 39.3 years
Male: 37.1 years
There are 136,674 adults, (32,813 of whom are seniors) in Peoria County.
Female: 92,050 (51.2%)
Male: 87,595 (48.8%)
The racial composition of Peoria County includes 67.29% White, 17.34% Black or African American, 4.62% Asian, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 120,891 | 67.29% |
| Black or African American | 31,145 | 17.34% |
| Two or more races | 14,144 | 7.87% |
| Asian | 8,302 | 4.62% |
| Other race | 4,542 | 2.53% |
| Native American | 509 | 0.28% |
| Native Hawaiian or Pacific Islander | 112 | 0.06% |
Peoria County 's average per capita income is $50,113. Household income levels show a median of $65,108. The poverty rate stands at 15.67%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $112,396 | $141,599 |
| Families | $88,221 | $116,062 |
| Households | $65,108 | $92,598 |
| Non Families | $40,308 | $57,597 |
Average Income
Median Household Income
Poverty Rate
