[1] Located in the heart of the Fox Cities in east-central Wisconsin, the district comprises parts of northeast Winnebago County and southern Outagamie County.

[2] Kristin Alfheim is the senator representing the 18th district.

The part of the district in Outagamie County falls within Wisconsin's 8th congressional district, which is represented by U.S. Representative Mike Gallagher.

The remainder of the district in Winnebago County 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.