Lyons Township is one of 29 townships in Cook County, Illinois. As of the 2010 census, its population was 111,688, with its most populous municipalities including La Grange (pop. 15,550), Justice (pop. 12,926) and Summit (pop. 11,054). Lyons Township was established in 1850. The village of Lyons, almost all of which lies within the township, is often confused with it. The township hall is located at 6404 S. Joliet Road in Countryside. Other township municipalities include Indian Head Park, Hodgkins and McCook, as well as major portions of Western Springs, Brookfield, Bridgeview, Burr Ridge and Willow Springs. Lyons Township's approximate borders are Harlem Avenue (Illinois Route 43) on the east, the line of 39th Street (Southview Avenue, Brewster Avenue) on the north, the DuPage County boundary (County Line Road) on the west, and the line of 87th Street on the south, except west of Willow Springs, where it follows the Des Plaines River to the DuPage county line. The Chicago Sanitary and Ship Canal, designated a National Historic District in 2011, passes through the township from southwest to northeast. Geography According to the United States Census Bureau, Lyons Township covers an area of ; of this, (98.44 percent) is land and (1.56 percent) is water. Borders Lyons Township is bordered on the north by Proviso and Riverside Townships, on the east by Stickney Township and the Chicago communities of Garfield Ridge and Clearing, on the south by Palos Township, and on the west by Downers Grove Township in DuPage County. Cities, towns, villages There are seventeen municipalities completely or partially within Lyons Township's thirty-seven square miles of territory: Bedford Park (the half west of Harlem Avenue) Bridgeview (the half northwest of 87th Street and Harlem) Brookfield (the third south of Southview Avenue) Burr Ridge (the eastern half in Cook County) Countryside Hickory Hills (the small portion north of 87th Street) Hinsdale (the small portion in Cook County) Hodgkins Indian Head Park Justice La Grange Lyons (all but the small portion north of 39th Street) McCook Riverside (the small portion south of 39th Street) Summit Western Springs (all but the small portion north of 39th Street) Willow Springs (all but the area south of 87th Street and the Des Plaines River) Unincorporated Towns Gary at La Grange Highlands at Nottingham Park at Extinct Towns Argo at Tiedtville at Adjacent townships Proviso Township (north) Riverside Township (north northeast) Berwyn Township (northeast) Stickney