Palos Township is one of 29 townships in Cook County, Illinois. As of the 2020 census, its population was 56,836, with its most populous municipality being Palos Hills (pop. 17,484). The vast majority of the township's population resides in its eastern half; the half west of La Grange Road consists mainly of facilities in the Cook County Forest Preserves. In 1850 the small town of Trenton, Illinois changed its name to Palos; this recommendation was made by M.S. Powell, the local postmaster, whose ancestor supposedly sailed with Christopher Columbus from Palos de la Frontera. When it incorporated as a village in 1914, Palos officially became Palos Park. The neighboring communities of Palos Hills and Palos Heights incorporated at later points. All three municipalities lie completely or substantially within Palos Township. Township offices are located at 10802 S. Roberts Road in Palos Hills. Other municipalities with significant portions in the township include Hickory Hills, Worth and Bridgeview. Palos Township's approximate borders are Harlem Avenue (Illinois Route 43) on the east, 135th Street on the south, Will-Cook Road extended to the DuPage County line on the west, and 87th Street on the north; in the northwest, the township border follows the Des Plaines River from 87th Street to DuPage County's southeast corner. The Chicago Sanitary and Ship Canal, designated a National Historic District in 2011, passes through the township just south of the river, and the Cal-Sag Channel roughly bisects the township from east to west. Township services According to Illinois law, townships are responsible for the maintenance of township roadways, the governance of the General Assistance program and the assessment of real property. In Cook County, townships are not responsible for assessing real property as the Cook County Assessor performs that function. Some townships have adopted other duties, including the provision of health services. Palos Township runs a health service providing low- or no-cost physical examinations, sick visits, cholesterol tests and screenings, pregnancy tests, blood pressure screening, immunizations, podiatry services for senior citizens and other services. Other services provided by Palos Township include free tax preparation for senior citizens, temporary handicapped placards, voter services, speaker's bureau, and much more. Geography According to the United States Census Bureau, Palos Township covers an area of ; of this, (95.86 percent) is land and (4.14 percent) is water. Borders Palos Township is bordered on the north by Lyons Township, on the east by Worth