Denver Township is a township in Rock County, Minnesota, United States. The population was 212 at the 2000 census. Denver Township was originally called Dover Township, and under the latter name was organized in 1878. The name was changed in 1880, there being another township in the state with the name Dover. It was then named after Denver, Colo…Denver Township is a township in Rock County, Minnesota, United States. The population was 212 at the 2000 census. Denver Township was originally called Dover Township, and under the latter name was organized in 1878. The name was changed in 1880, there being another township in the state with the name Dover. It was then named after Denver, Colorado.