[1] Located in south-central Wisconsin, the district is contained entirely within central Dane County.

It includes the village of Shorewood Hills, the western portion of downtown and the near west neighborhoods of the city of Madison.

The district contains all of the University of Wisconsin–Madison campus and Edgewood College, as well as landmarks such as the Wisconsin Historical Society, the State Street pedestrian mall, Camp Randall Stadium, the Kohl Center, the University of Wisconsin–Madison Arboretum, Henry Vilas Zoo, UW Health University Hospital, and historic Forest Hill Cemetery.

[2] The district is represented by Democrat Renuka Mayadev, since January 2025.

[3] The 77th district has the largest Asian American population in the Assembly.