Peoria County, Illinois

Peoria County, Illinois
County	Peoria County
State	Illinois
Founded	1825
Seat	Peoria
Largest city	Peoria
Area total sq mi	631
Area land sq mi	619
Area water sq mi	12
Area percentage	1.9%
Census estimate yr	2023
Pop	177,806
Density sq mi	287
Time zone	Central
Web	www.peoriacounty.org
Named for	The Peoria people
District	16th
District2	17th

Peoria County, Illinois is a county located in the central part of the U.S. state of Illinois. Established in 1825, it is named for the Peoria tribe, a sub-tribe of the Illinois Confederation. The county seat and largest city is Peoria, a major population and economic center on the Illinois River. The county is part of the Peoria metropolitan statistical area.

History

The region was originally inhabited by members of the Illinois Confederation, including the Peoria and Kaskaskia peoples. French explorers, including Jacques Marquette and Louis Jolliet, first visited the area in 1673. A fort and mission, Fort Crèvecoeur, was established in 1680 by explorer Robert de La Salle. The area later became part of the Illinois Country under New France. Following the French and Indian War, control passed to Great Britain and then to the United States after the American Revolutionary War. The county was formally organized from Fulton County in 1825, with early growth tied to river trade and agriculture. During the 19th century, it became a major manufacturing and distilling center, with industries like the Caterpillar Inc. and Hiram Walker & Sons distillery shaping its economy. The Abraham Lincoln and Stephen A. Douglas debate of 1854 took place in Peoria.

Geography

According to the U.S. Census Bureau, the county has a total area of 631 square miles, of which 619 square miles is land and 12 square miles is water. The primary waterway is the Illinois River, which flows through the central part of the county, creating Peoria Lake. The landscape is characterized by rolling plains and fertile farmland, part of the Grand Prairie region. Major tributaries include the Spoon River and Kickapoo Creek. The county contains several parks and natural areas, including Forest Park Nature Center and Jubilee College State Park, which is located in the northwestern part of the county. It is bordered by Knox County to the north, Stark County and Marshall County to the east, Woodford County and Tazewell County to the south, and Fulton County to the west.

Demographics

As of the 2020 United States census, the population was 181,830. The 2023 estimate placed the population at 177,806. The racial makeup is predominantly White, with significant African American and Hispanic or Latino communities. The largest ancestry groups include German, Irish, English, and Italian. The population is concentrated in the city of Peoria, with smaller communities like Bartonville, Bellevue, and Dunlap comprising the remainder. The median household income is slightly below the state average, and the poverty rate is above the national average. Educational attainment levels are comparable to state averages.

Government

Peoria County operates under a board-commission form of government. The governing body is the Peoria County Board, consisting of 18 members elected from districts. The board appoints a County administrator to oversee daily operations. Other elected officials include the State's Attorney, Sheriff, County Clerk, and Treasurer. The county is part of the 16th and 17th Congressional Districts, represented by Darren LaHood and Eric Sorensen, respectively. At the state level, it lies within the Illinois Senate's 46th and 47th districts and the Illinois House's 91st, 92nd, and 93rd districts. The county contains multiple municipalities, each with its own mayor-council or council-manager system.

Economy

Historically dominated by manufacturing, the economy has diversified into healthcare, education, and insurance. Caterpillar Inc., founded in the county, remains a major employer, though its global headquarters moved to Deerfield in 2017. Other significant employers include OSF HealthCare, which operates OSF Saint Francis Medical Center, and University of Illinois College of Medicine at Peoria. The Greater Peoria Regional Airport supports aviation-related industries. Agriculture continues to play a vital role, with the county being a leading producer of corn and soybeans. The Peoria Riverfront Museum and Caterpillar Visitors Center are key cultural and tourist attractions. The downtown Peoria area has seen redevelopment efforts focused on the Warehouse District.

Education

Primary and secondary education is provided by several public school districts, including Peoria Public Schools, Dunlap Community Unit School District 323, and Limestone Community High School District 310. Higher education institutions include Bradley University, a private university, and Illinois Central College, a public community college. The University of Illinois College of Medicine at Peoria is a major regional medical school. Specialized education is offered by the Peoria Academy and Peoria Notre Dame High School. The Peoria Public Library system serves the county with multiple branches. The Peoria Zoo and Luthy Botanical Garden provide educational programming in natural sciences.

Transportation

Major highways include Interstate 74, which runs east-west, and Interstate 474, a southern bypass. U.S. Routes such as U.S. Route 24 and U.S. Route 150 provide additional connectivity. State routes include Illinois Route 8 and Illinois Route 29. Public transit is operated by Greater Peoria Mass Transit District (CityLink). The Greater Peoria Regional Airport offers commercial air service. Rail service is provided by BNSF Railway and Union Pacific Railroad for freight, with Amtrak providing passenger service via the Illinois Zephyr and Carl Sandburg lines to Chicago and Quincy. The Illinois River also supports commercial barge traffic.

Category:Peoria County, Illinois Category:Illinois counties Category:1825 establishments in Illinois