Proviso Township, Illinois

Proviso Township
Location in Cook County
Cook County's location in Illinois
Coordinates: 41°51′52″N 87°52′14″W / 41.86444°N 87.87056°W / 41.86444; -87.87056
CountryUnited States
StateIllinois
CountyCook
Government
  TypeTownship
  SupervisorMichael Corrigan
Area
  Total
29.68 sq mi (76.86 km2)
  Land29.68 sq mi (76.86 km2)
  Water0 sq mi (0 km2)  0%
Elevation
627 ft (191 m)
Population
 (2020)
  Total
151,209
  Density5,100/sq mi (2,000/km2)
Time zoneUTC-6 (CST)
  Summer (DST)UTC-5 (CDT)
ZIP codes
60104, 60126, 60130, 60141, 60153, 60154, 60155, 60160, 60161, 60162, 60163, 60164, 60165, 60305, 60513, 60521, 60525, 60526, 60546, 60558
Area code(s)630/331, 708/464
FIPS code17-031-62133
Websitewww.provisotownship.com

Proviso Township is one of 29 townships in Cook County, Illinois, United States. As of the 2020 census, its population was 151,209. It was organized in 1850 and originally named "Taylor", but shortly afterward its name was changed to make reference to the Wilmot Proviso, a contemporary piece of legislation intended to stop the spread of slavery.

The Proviso Township government office is located at 4565 W. Harrison Street, Hillside, IL 60162.