South Fork Township is a township in Delaware County, Iowa, United States.

[1] South Fork Township covers an area of 41.82 square miles (108.32 square kilometers).

The streams of Bell Creek and Sand Creek run through this township.

(This list is based on USGS data and may include former settlements.)

The township contains five cemeteries: Hopkinton, Livingston, Mount Pleasant, Sand Springs and Willard.