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Peoria County is a county located in the state of Illinois. According to the 2010 census, it had a
population of 186,494. Peoria County was
created on January 13, 1825. The county
seat is Peoria. The county is named
for the Peoria Native American tribe.
Peoria County is part of the Peoria, IL Metropolitan Statistical Area.
The county is named for the Peoria Native American tribe.
County QuickFacts: CensusBureau Quick Facts
Peoria County was created on January 13, 1825 (Laws, 1825, p. 85) and was formed from unorganized land and Fulton
County. Present area), or parts of it), formerly included in: Fulton County (1823-1825), Pike County (1821-1823), Bond
County (1817-1821), Madison County (1812-1821) and St. Clair County (1801-1812).
The County was named for the Indian tribe called the Peorias, one of the tribes from the Illinois confederacy. The County Seat is Peoria (1825-Present).
As reported by the Census Bureau, the county has a total area of 631 square miles (1,634 km2), of which, 620 square miles (1,605 km2) of it is land and 11 square miles (29 km2) of it (1.80%) is water.
Peoria county is located close to the center of Illinois. Hazel
& Bill Rutherford Wildlife Prairie State Park and Jubilee College State
Park are located in this county.
Bordering counties are as follows: