Massachusetts's 4th congressional district is located mostly in southern Massachusetts. It is represented by Democrat Jake Auchincloss. Auchincloss was first elected in 2020.
Massachusetts's 4th congressional district
Interactive map of district boundaries since January 3, 2023
The district covers much of the area included in the 10th district before the 1992 redistricting. In prior years, the district stretched from Brookline to Fitchburg. The shape of the district underwent some changes effective from the elections of 2012, after Massachusetts congressional redistricting to reflect the 2010 census.[3] Most of Plymouth County and the South Coast are included in the new 9th district. The new 4th district has expanded westward to include towns along the Rhode Island border that had been in the old 3rd district.
For a very brief time (1793–95) it represented part of the District of Maine.
^"Massachusetts". Congressional Directory for the Second Session of the Thirty-Seventh Congress. Washington DC: House of Representatives. 1861.
^Ben. Perley Poore (1869). "Massachusetts". Congressional Directory for the First Session of the Forty-First Congress (2nd ed.). Washington DC: Government Printing Office. hdl:2027/nyp.33433081796686.
^Ben. Perley Poore (1878). "Massachusetts". Congressional Directory: 45th Congress (3rd ed.). Washington DC: Government Printing Office. ISBN978-0-16-041176-2.
^Ben. Perley Poore (1882). "Massachusetts". Congressional Directory: 47th Congress (3rd ed.). Washington DC: Government Printing Office.
^L.A. Coolidge (1897). "Massachusetts". Official Congressional Directory: Fifty-Fifth Congress. Washington DC: Government Printing Office.
^A.J. Halford (1909). "Massachusetts". Congressional Directory: 60th Congress (2nd ed.). Washington DC: Government Printing Office.
^"Massachusetts". Official Congressional Directory: 75th Congress (2nd ed.). Washington DC: Government Printing Office. 1938.
^"Massachusetts". Official Congressional Directory: 90th Congress. Washington DC: Government Printing Office. 1968.
^"Massachusetts". 1991-1992 Official Congressional Directory: 102nd Congress. Washington DC: Government Printing Office. 1991.