Okoboji Township is one of twelve townships in Dickinson County, Iowa, United States. As of the 2000 census, its population was 2,087.
Okoboji Township was formed in 1859.
According to the United States Census Bureau, Okoboji Township covers an area of 36.12 square miles (93.54 square kilometers); of this, 36.09 square miles (93.48 square kilometers, 99.94 percent) is land and 0.03 square miles (0.07 square kilometers, 0.07 percent) is water.
The township contains these two cemeteries: Little Sioux Lutheran and Saint Joseph.