[1] It was organized in 1850 and is located southwest of Chicago in southern Cook County.

An administrative office for Bremen Township is located at 16361 South Kedzie Parkway, Markham, Illinois.

[2] Bremen Township is bordered by Harlem Avenue (Illinois Route 43) on the west, 135th Street on the north, Western Avenue on the east and 183rd Street on the south.

The township contains six cemeteries: Bachelor's Grove, County, Lewis Memorial Park, Saint Gabriel Catholic, Trinity Evangelical Lutheran and Zion Lutheran.

30.50% of all households were made up of individuals, and 12.80% had someone living alone who was 65 years of age or older.