2003-2012

Boston (Wards 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22), Cambridge, Chelsea, Somerville

1993-2002

Belmont, Boston (Wards 1, 2, 4, 5, 9, 10, 11, 12, 14, 15, 17, 18, 21, 22), Cambridge, Chelsea, Somerville, Watertown

1983-1992

Arlington, Belmont, Boston (Wards 1, 2, 4, 5, 21, 22), Cambridge, Somerville, Waltham, Watertown

1973-1982

Arlington, Belmont, Boston (Wards 1, 2, 5, 21, 22), Cambridge, Somerville, Watertown

1963-1972

Boston (Wards 1, 2, 3, 21, 22), Brookline, Cambridge, Somerville

1943-1962

Everett, Lynnfield, Malden, Medford, Melrose, N. Reading, Reading, Saugus, Somerville (Wards 4, 5, 6, 7), Stoneham, Wakefield

Boston (Wards 1, 2, 3, 22), Cambridge, Somerville (Wards 1, 2, 3) were in the 11th District

1933-1942

Cambridge (Wards 2, 3), Everett, Malden, Medford, Somerville

Boston (Ward 22), Brookline, Cambridge (Wards 4, 5, 6, 7, 8, 9, 10), Lincoln, Newton, Waltham, Watertown, Wellesley, Weston were in the 9th District

Boston (Wards 1, 2, 3, 8), Cambridge (Ward 1), and Chelsea were in the 11th District

1913-1932

Arlington, Belmont, Cambridge, Lexington, Medford, Melrose, Stoneham, Wakefield, Watertown, Winchester

Chelsea, Everett, Malden, Revere, Somerville, Winthrop were in the 9th District

Boston (Wards 1, 2, 3, 4, 5, 6) were in the 10th District

1903-1912

Arlington, Belmont, Cambridge, Medford, Somerville, Winchester, Woburn

Boston (Wards 1, 2, 3, 4, 5, 6, 7, 8, 9, 12), and Winthrop were in the 9th District

1893-1902

Arlington, Boston (Wards 9, 10, 11), Cambridge, Medford, Somerville

Boston (Wards 1, 2, 3, 6, 7, 8, 12, 16, 17, 18, 19), and Winthrop were in the 9th District

1883-1892

All cities and towns now found in the 8th District were assigned to the 4th and 5th districts

Boston wards 1, 2, 6, 7, 13, 14, 15, 16 were in the 4th District

Arlington, Belmont, Boston (Wards 8, 9, 10, 25), Burlington, Cambridge, Lexington, Somerville, Waltham, Watertown and Woburn were in the 5th District

1873-1882

Brighton, Brookline, Cambridge, Framingham, Holliston, Hopkinton, Natick, Sherburn, Watertown, Wayland, West Roxbury, Weston

Boston (Wards 1, 2, 6, 7, 8, 9, 10, 11, 12), Chelsea, Revere and Winthrop were in the 4th District

Arlington, Belmont, Burlington, Charlestown, Everett, Lexington, Malden, Medford, Melrose, Somerville, Stoneham, Wakefield, Waltham, Winchester and Woburn were in the 5th District

1863-1872

All cities and towns now found in the 8th District were assigned to the 4th and 6th districts

Boston (Wards 1, 2, 3, 4, 6, 9), Cambridge, Chelsea and Winthrop were in the 4th District

Charlestown, Belmont, Billerica, Burlington, Lexington, Malden, Medford, Melrose, N. Reading, Reading, Somerville, S. Reading, Stoneham, Tewksbury, Waltham, Wilmington, Winchester, Woburn and W. Cambridge were in the 6th District

1853-1862

All cities and towns now found in the 8th District were assigned to the 5th and 7th districts

Boston (Wards 1, 2, 3, 4, 5, 6), Cambridge, Chelsea and Winthrop were in the 5th District

Charlestown, Burlington, Lexington, Malden, Medford, Melrose, Reading, Somerville, S. Reading, Stoneham, Waltham, W. Cambridge, Wilmington, Winchester and Woburn were in the 7th District

1823-1852

All cities and towns now found in the 8th District were assigned to the 1st and 4th districts

The Boston area composed the 1st District

All of Middlesex County composed the 4th District