Chillicothe, Illinois

Chillicothe
Art deco movie theater on North 2nd Street
Location of Chillicothe in Peoria County, Illinois.
Coordinates: 40°55′05″N 89°29′44″W / 40.91806°N 89.49556°W / 40.91806; -89.49556
CountryUnited States
StateIllinois
CountyPeoria
Platted1834
Founded byErastus C. Root and Samuel T. McKean
Government
 • MayorMichael Hughes
Area
 • Total
5.54 sq mi (14.34 km2)
 • Land5.27 sq mi (13.66 km2)
 • Water0.26 sq mi (0.68 km2)
Elevation
528 ft (161 m)
Population
 (2020)
 • Total
6,128
 • Estimate 
(2024)
6,052
 • Density1,161.9/sq mi (448.62/km2)
Time zoneUTC-6 (CST)
 • Summer (DST)UTC-5 (CDT)
ZIP code
61523
Area code309
FIPS code17-14117
GNIS feature ID2393515
Websitewww.cityofchillicotheil.org

Chillicothe (/ˌɪlɪˈkɔːθi/) is a town on the Illinois River in Peoria County, Illinois, United States. As of the 2020 census, Chillicothe had a population of 6,128. Chillicothe is just north of the city of Peoria and is part of the Peoria Metropolitan Statistical Area.