Thornton Township
Location in Cook County
Cook County's location in Illinois
Coordinates: 41°35′00″N 87°37′00″W / 41.58333°N 87.61667°W / 41.58333; -87.61667Coordinates: 41°35′00″N 87°37′00″W / 41.58333°N 87.61667°W / 41.58333; -87.61667
CountryUnited States United States
StateIllinois Illinois
 • TypeTownship
 • BodyTownship Board
 • SupervisorFrank M. Zuccarelli
 • TrusteeJoyce M. Washington
 • TrusteeStafford C. Owens
 • TrusteeGerald “Jerry” Jones
 • TrusteeNorbert Cipowski
 • Total47.42 sq mi (122.8 km2)
 • Land46.93 sq mi (121.5 km2)
 • Water0.49 sq mi (1.3 km2)
620 ft (189 m)
 • Estimate 
 • Density3,608/sq mi (1,393.2/km2)
Time zoneUTC-6 (CST)
 • Summer (DST)UTC-5 (CDT)
ZIP codes
60406, 60409, 60419, 60425, 60426, 60429, 60430, 60438, 60469, 60473, 60476, 60633, 60827
Area code708
FIPS code17-031-75198
GNIS feature ID0422238

Thornton Township is one of 29 townships in Cook County, Illinois. As of the 2010 census, its population was 169,326.[2]

Incorporated in 1850, it is located immediately south of the city of Chicago. It is the second most populous township in Illinois as of the 2010 census, after Rockford Township (pop. 178,527) in Winnebago County.[2]

The village of South Holland serves as the governmental seat of Thornton Township. The township is named after the village of Thornton, located in the south central portion of the township. Many parts of the township carry names inspired by the village's name, including the three high schools of Thornton Township District 205: Thornton Township High School in Harvey; Thornwood High School in South Holland; Thornridge High School in Dolton; Thornton Fractional South High School in Lansing; Thornton Fractional North High School in Calumet City and Thornton Fractional Center for Academics and Technology also in Calumet City. Supervisor Frank M. Zuccarelli was voted Supervisor of the Year in 2007 by the Township Officials of Illinois for his outstanding service to the residents of Thornton Township.


According to the United States Census Bureau, Thornton Township covers an area of 47.42 square miles (122.81 km2); of this, 46.93 square miles (121.54 km2) is land and 0.49 square miles (1.27 km2) (1.03 percent) is water.[2]


Thornton Township is bordered by Western Avenue on the west, 138th Street on the north, the Indiana state line on the east, and 183rd/186th Street on the south.

Cities and villages

Adjacent townships


The township contains these 11 cemeteries: Berger, First Reformed of Lansing, Glen Oak, Hazelwood, Holy Cross Catholic, Homewood Memorial Gardens, Mount Forest, Oak Lawn, Oak Ridge, Oakland and Washington Memory Gardens.

Major highways

Airports and landing strips


Forest Preserves

The following are all part of the Cook County Forest Preserves:



Historical population
Census Pop.
2016 (est.)167,812[1]
U.S. Decennial Census[3]

Political districts


  1. ^ a b "Population and Housing Unit Estimates". Retrieved June 9, 2017.
  2. ^ a b c "Geographic Identifiers: 2010 Demographic Profile Data (DP-1): Thornton township, Cook County, Illinois". U.S. Census Bureau, American Factfinder. Archived from the original on February 10, 2020. Retrieved March 21, 2013.
  3. ^ "Census of Population and Housing". Retrieved June 4, 2016.