Greenfield Township, Calhoun County, Iowa

Greenfield Township is one of sixteen townships in Calhoun County, Iowa, United States. As of the 2000 census, its population was 275.

History
Greenfield Township was created in 1870. It was probably named from the green prairie grass.

Geography
Greenfield Township covers an area of 36.98 sqmi and contains one incorporated settlement, Knierim.