Wisconsin's 5th congressional district is a congressional district of the United States House of Representatives in Wisconsin, covering most of Milwaukee's northern and western suburbs. It presently covers all of Washington and Jefferson counties, most of Waukesha County, and portions of Dodge, Milwaukee and Walworth counties. It is currently represented by Republican Scott Fitzgerald.

Washington County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 136,761. Its county seat is West Bend. The county was created from Wisconsin Territory in 1836 and organized in 1845. It was named after President George Washington.