[2] It is the home of the Jim Edgar Panther Creek State Fish and Wildlife Area.

Cass was serving as Andrew Jackson's Secretary of War just before the County was named.

[15] Typically for German-settled western Central Illinois, Cass County opposed the Civil War and became solidly Democratic for the next six decades.

Only hatred of Woodrow Wilson’s policies towards Germany following World War I drove the county into Republican hands in the 1920 landslide.

Cass County is located in Illinois's 18th Congressional District and is currently represented by Republican Darin LaHood.

The county is located in the 47th district of the Illinois Senate, and is currently represented by Republican Jil Tracy.