
Peoria
- County:
- Peoria County
- County Seat:
- Yes
- Area (mi²):
- 48.125
- State:
- Illinois
Peoria is a city located in Peoria County, Illinois. Peoria has a 2025 population of 108,870. It is also the county seat of Peoria County. Peoria is currently declining at a rate of -0.72% annually and its population has decreased by -3.52% since the most recent census, which recorded a population of 112,845 in 2020.
The average household income in Peoria is $88,223 with a poverty rate of 19.97%. The median age in Peoria is 35.8 years: 34.5 years for males, and 37 years for females.