[1] The township was named by a settler from Boston after Chelsea, Massachusetts.

[2] Some sources give it as the birthplace of painter Gladys Nelson Smith.

[3] Chelsea Township covers an area of 107.21 square miles (277.7 km2) and contains no incorporated settlements.

The streams of Cole Creek, Durechen Creek and Gilmore Branch run through this township.

This article about a location in Butler County, Kansas is a stub.