Summit Township is one of eighteen townships in Callaway County, Missouri, USA. As of the 2010 census, its population was 8,873. Summit Township as of 2018 covers an area of 60.22 square miles and contains one incorporated settlement, Holts Summit. It contains the streams of Cedar Creek, Clifton Creek, Niemans Creek and Turkey Creek—and …Summit Township is one of eighteen townships in Callaway County, Missouri, USA. As of the 2010 census, its population was 8,873. Summit Township as of 2018 covers an area of 60.22 square miles and contains one incorporated settlement, Holts Summit. It contains the streams of Cedar Creek, Clifton Creek, Niemans Creek and Turkey Creek—and seven cemeteries: Bull, Harthill, Link, Meng, Mount Vernon, Stokes and Wallace. It also includes the former incorporated town of Cedar City, which was absorbed by Jefferson City in 1989, thus extending the boundaries of Cole County's Jefferson City into a small area of Callaway County along the Missouri River.