It includes the cities of Fond du Lac and West Bend, and the villages of Belgium, Cedar Grove, Fredonia, North Fond du Lac, Saukville, and Slinger.

[2] Dan Feyen is the senator representing the 20th district.

The portion of the district in Dodge and Washington counties falls within Wisconsin's 5th congressional district, which is represented by U.S. Representative Scott L. Fitzgerald.

The remainder of the district, in Ozaukee, Sheboygan, and Fond du Lac counties, falls within Wisconsin's 6th congressional district, represented by U.S. Representative Glenn Grothman.

Previous politicians of a specific numbered district have represented a completely different geographic area, due to redistricting.