Peoria County
Also known as Peoria County, Illinois, County of Peoria, Peoria, Peoria County, IL
county in Illinois, United States of America
Key facts
- Country
- United States
- State
- Illinois
- Named after
- Peoria tribe
- Seat
- Peoria
- Largest city
- Peoria
- Total
- 631 sq mi (1,630 km )
- Land
- 619 sq mi (1,600 km )
- Water
- 11 sq mi (28 km ) 1.8%
- Estimate 2025
- 178,553
- Density
- 294/sq mi (113/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional districts
- 16th , 17th
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Article
Peoria County is located in the U.S. state of Illinois. The 2020 United States census listed its population at 181,830. Its county seat is Peoria. Peoria County is part of the Peoria metropolitan area.
History