Search results
County government. Subdivisions. 261 Precincts. 1,433 Townships. There are 102 counties in Illinois. The most populous of these is Cook County, the second-most populous county in the United States and the home of Chicago, while the least populous is Hardin County. The largest by land area is McLean County, while the smallest is Putnam County.
More than 40 percent of all residents of Illinois live within Cook County. As of 2020, the population was 5,275,541. The county seat is Chicago, the most populous city in Illinois and the third most populous city in the United States. The county is at the center of the Chicago metropolitan area.
Thornton Township is one of 29 townships in Cook County, Illinois. As of the 2020 census, its population was 157,865. 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 2020 census, after Rockford Township (pop. 170,478) in Winnebago County.
Subcategories. This category has the following 17 subcategories, out of 17 total. Berwyn, Illinois (1 C, 18 P) Blue Island, Illinois (1 C, 11 P) Brookfield, Illinois (1 C, 14 P) Burbank, Illinois (5 P) Calumet City, Illinois (1 C, 4 P) Chicago (26 C, 11 P) Chicago Heights, Illinois (1 C, 10 P) Des Plaines, Illinois (1 C, 31 P)
Cook County was created on January 15, 1831 by an act of the Illinois State Legislature as the 54th county established in Illinois. The unincorporated Fort Dearborn settlement at the mouth of the Chicago River became the new county’s seat. On May 7, 1831, Cook County elected its first officials.
Cook County contains 134 municipalities in its region, the most well known being the City of Chicago – which is the County seat where the central offices of Cook County are located.
The Circuit Court of Cook County is the largest of the 24 circuit courts ( trial courts of original and general jurisdiction) in the judiciary of Illinois as well as one of the largest unified court systems in the United States – second only in size to the Superior Court of Los Angeles County since that court merged with other courts in 1998.
