| State: | Massachusetts |
| District Number: | 9 |
| Image Caption: | Interactive map of district boundaries since January 3, 2023 |
| Representative: | Bill Keating |
| Party: | Democratic |
| Residence: | Bourne |
| Population: | 785,636 |
| Population Year: | 2022 |
| Median Income: | $94,066[1] |
| Percent White: | 83.0 |
| Percent Hispanic: | 6.0 |
| Percent Black: | 2.6 |
| Percent Asian: | 1.3 |
| Percent More Than One Race: | 5.3 |
| Percent Other Race: | 1.9 |
| Cpvi: | D+6[2] |
Massachusetts's 9th congressional district is located in eastern Massachusetts. It is represented by Democrat William R. Keating. With a Cook Partisan Voting Index rating of D+6, it is the least Democratic district in Massachusetts, a state with an all-Democratic congressional delegation.[2]
Redistricting after the 2010 census eliminated Massachusetts's 10th congressional district; the 9th covers much of the old 10th's eastern portion. The district also added some Plymouth County communities from the old 4th district, and some Bristol County communities from the old 3rd and 4th districts. It eliminated a few easternmost Norfolk County communities and northernmost Plymouth County communities.
From 1963 to 2013, the 9th covered most of southern Boston, and in its latter years, it included many of Boston's southern suburbs. Most of that territory is now the 8th district.
| Year | Office | Result | |
|---|---|---|---|
| 2000 | President | Gore 62 – 31% | |
| 2004 | President | Kerry 63 – 36% | |
| 2008 | President | Obama 58 – 41% | |
| 2012 | President | Obama 56 – 43% | |
| 2016 | President | Clinton 53 – 42% | |
| 2020 | President | Biden 58 – 40% |
All of Barnstable County, Dukes County, and Nantucket County.
The Town of Cohasset, in Norfolk County.
The following municipalities in Bristol County:
The City of New Bedford, and the Towns of Acushnet, Dartmouth, Fairhaven, Raynham (portions), and Westport.
The following municipalities in Plymouth County:
The City of Bridgewater, and the Towns of Carver, Duxbury, Halifax, Hanover, Hanson, Kingston, Marion, Marshfield, Mattapoisett, Middleborough, Norwell, Pembroke, Plymouth, Plympton, Rochester, Rockland, Scituate, and Wareham.
1849: "The towns in the County of Plymouth, excepting Abington, Hingham, Hull, North Bridgewater, Rochester, and Wareham; and all the towns in the County of Bristol, excepting Dartmouth, Fairhaven, and New Bedford."[3]
1862: "The towns of Ashburnham, Auburn, Barre, Boylston, Brookfield, Charlton, Clinton, Douglas, Dudley, Fitchburg, Gardner, Grafton, Holden, Hubbardston, Lancaster, Leicester, Leominster, Millbury, New Braintree, North Brookfield, Oakham, Oxford, Paxton, Princeton, Rutland, Shrewsbury, Southbridge, Spencer, Sterling, Sturbridge, Sutton, Templeton, Webster, West Boylston, Westminster, and Winchendon, and the city of Worcester, in the county of Worcester."[4]
1893: Boston, Wards 1, 2, 3, 6, 7, 8, 12, 16, 17, 18, 19 (Precincts 2, 3, 4, 6); Winthrop.[5]
1916: In Middlesex County: Everett, Malden, Somerville. In Suffolk County: Chelsea, Revere, Winthrop.[6]
1953: "Counties: Barnstable, Dukes, and Nantucket. Bristol County: City of Fall River, ward 6, and city of New Bedford; towns of Acushnet, Dartmouth, Fairhaven, and Westport. Norfolk County: Town of Cohasset. Plymouth County: Towns of Abington, Bridgewater, Carver, Duxbury, East Bridgewater, Halifax, Hanover, Hanson, Hingham, Hull, Kingston, Lakeville, Marion, Marshfield, Mattapoisett, Middleborough, Norwell, Pembroke, Plymouth, Plympton, Rochester, Rockland, Scituate, Wareham, West Bridgewater, and Whitman."[7]
1963: Boston (Wards 4- 17, 19, 20).[8]
1977: "Norfolk County: Towns of Canton, Dedham, Dover, Needham, Norwood, Walpole, and Westwood. Suffolk County: City of Boston: Wards 3, 4, 6—14, 19, and 20."
1985: "Bristol County: City of Taunton. Towns of Dighton, Easton, and Raynham. Norfolk County: Towns of Canton, Dedham, Needham, Norwood, Stoughton, and Westwood. Plymouth County: Towns of Bridgewater, Halifax, Lakeville, and Middleborough. Suffolk County: City of Boston: Wards 3, 6–14, 19, and 20."[9]
In Bristol County:
In Norfolk County:
Avon, Braintree, Canton, Dedham, Holbrook, Medfield, Milton, Needham, Norwood, Randolph, Stoughton, Walpole, Westwood.
In Plymouth County:
Bridgewater, Brockton, East Bridgewater, Hanson, Precincts 1 and 3, West Bridgewater, Whitman.
In Suffolk County:
Boston, Ward 3, Precincts 5 and 6; Ward 5, Precincts 3–5, 11; Ward 6; Ward 7, Precincts 1–9; Ward 13, Precincts 3, 7–10; Ward 15, Precinct 6; Ward 16, Precincts 2, 4–12; Ward 17, Precincts 4, 13, 14; Ward 18, Precincts 9–12, 16–20, 22, 23; Ward 19, Precincts 2, 7, 10–13; Ward 20.
| Representative | Party | Years | Cong ress | Electoral history | District location | |||
|---|---|---|---|---|---|---|---|---|
| District created March 4, 1795 | ||||||||
| align=left | Joseph B. Varnum | Democratic- Republican | nowrap | March 4, 1795 – March 3, 1803 | Elected in 1795. Re-elected in 1796. Re-elected in 1798. Re-elected in 1800. Redistricted to the . | 1795 – 1803 "2nd Middle district" | ||
| align=left | Phanuel Bishop | Democratic- Republican | nowrap | March 4, 1803 – March 3, 1807 | Redistricted from the and re-elected in 1802. Re-elected in 1804. Retired. | 1803 – 1815 "Bristol district" | ||
| align=left | Josiah Dean | Democratic- Republican | nowrap | March 4, 1807 – March 3, 1809 | Elected in 1806. Lost re-election. | |||
| align=left | Laban Wheaton | Federalist | nowrap | March 4, 1809 – March 3, 1815 | Elected in 1808. Re-elected in 1810. Re-elected in 1812. Redistricted to the . | |||
| align=left | John Reed, Jr. | Federalist | nowrap | March 4, 1815 – March 3, 1817 | Redistricted from the and re-elected in 1814. Lost re-election. | 1815 – 1823 "Barnstable district" | ||
| align=left | Walter Folger, Jr. | Democratic- Republican | nowrap | March 4, 1817 – March 3, 1821 | Elected May 1, 1817 on the third ballot. Lost re-election. | |||
| align=left | John Reed Jr. | Federalist | nowrap | March 4, 1821 – March 3, 1823 | Elected in 1820. Redistricted to the . | |||
Henry W. Dwight | Adams-Clay Federalist | nowrap | March 4, 1823 – March 3, 1825 | Redistricted from the and re-elected in 1822. Re-elected in 1824. Re-elected in 1827 on the second ballot. Re-elected in 1828. | 1823 – 1833 "Berkshire district" | |||
| Anti-Jacksonian | nowrap | March 4, 1825 – March 3, 1831 | ||||||
| align=left | George N. Briggs | Anti-Jackson | nowrap | March 4, 1831 – March 3, 1833 | Elected in 1830. Redistricted to the . | |||
| align=left | William Jackson | Anti-Masonic | nowrap | March 4, 1833 – March 3, 1837 | Elected in 1833. Re-elected in 1834. Retired. | 1833–1843 | ||
| align=left | William S. Hastings | Whig | nowrap | March 4, 1837 – June 17, 1842 | Elected in 1836. Re-elected in 1838. Re-elected in 1840. Died. | |||
| Vacant | nowrap | June 17, 1842 – March 3, 1843 | ||||||
| align=left | Henry Williams | Democratic | nowrap | March 4, 1843 – March 3, 1845 | Elected in 1842. Retired. | 1843–1853 | ||
| align=left | Artemas Hale | Whig | nowrap | March 4, 1845 – March 3, 1849 | Elected in 1844. Re-elected in 1846. Retired. | |||
| align=left | Orin Fowler | Whig | nowrap | March 4, 1849 – September 3, 1852 | Elected in 1848. Re-elected in 1850. Died. | |||
| Vacant | nowrap | September 3, 1852 – December 13, 1852 | ||||||
| align=left | Edward P. Little | Democratic | nowrap | December 13, 1852 – March 3, 1853 | Elected to finish Fowler's term. Retired. | |||
Alexander Dewitt | Free Soil | nowrap | March 4, 1853 – March 3, 1855 | Elected in 1852. Re-elected in 1854. Lost re-election. | 1853–1863 | |||
| Know Nothing | nowrap | March 4, 1855 – March 3, 1857 | ||||||
| align=left | Eli Thayer | Republican | nowrap | March 4, 1857 – March 3, 1861 | Elected in 1856. Re-elected in 1858. | |||
| align=left | Goldsmith Bailey[10] | Republican | nowrap | March 4, 1861 – May 8, 1862 | Elected in 1860. Died. | |||
| Vacant | nowrap | May 8, 1862 – December 1, 1862 | ||||||
| align=left | Amasa Walker | Republican | nowrap | December 1, 1862 – March 3, 1863 | Elected to finish Bailey's term. | |||
| align=left | William B. Washburn[11] | Republican | nowrap | March 4, 1863 – December 5, 1871 | Elected in 1862. Re-elected in 1864. Re-elected in 1866. Re-elected in 1868. Re-elected in 1870. Resigned to become governor of Massachusetts. | 1863–1873 | ||
| Vacant | nowrap | December 5, 1871 – January 2, 1872 | ||||||
| align=left | Alvah Crocker | Republican | nowrap | January 2, 1872 – March 3, 1873 | Elected to finish Washburn's term. Redistricted to the . | |||
| align=left | George Frisbie Hoar | Republican | nowrap | March 4, 1873 – March 3, 1877 | Redistricted from the and re-elected in 1872. Re-elected in 1874. | 1873–1883 | ||
| align=left | William W. Rice[12] | Republican | nowrap | March 4, 1877 – March 3, 1883 | Elected in 1876. Re-elected in 1878. Re-elected in 1880. | |||
| align=left | Theodore Lyman | Independent Republican | nowrap | March 4, 1883 – March 3, 1885 | Elected in 1882. | 1883–1893 | ||
| align=left | Frederick D. Ely | Republican | nowrap | March 4, 1885 – March 3, 1887 | Elected in 1884. Lost re-election. | |||
| align=left | Edward Burnett | Democratic | nowrap | March 4, 1887 – March 3, 1889 | Elected in 1886. | |||
| align=left | John W. Candler | Republican | nowrap | March 4, 1889 – March 3, 1891 | Elected in 1888. | |||
| align=left | George F. Williams | Democratic | nowrap | March 4, 1891 – March 3, 1893 | Elected in 1890. | |||
| align=left | Joseph H. O'Neil | Democratic | nowrap | March 4, 1893 – March 3, 1895 | Elected in 1892. Lost renomination. | 1893–1903 | ||
| align=left | John F. Fitzgerald[13] | Democratic | nowrap | March 4, 1895 – March 3, 1901 | Elected in 1894. Re-elected in 1896. Re-elected in 1898. | |||
| align=left | Joseph A. Conry | Democratic | nowrap | March 4, 1901 – March 3, 1903 | Elected in 1900. | |||
| align=left | John A. Keliher[14] | Democratic | nowrap | March 4, 1903 – March 3, 1911 | Elected in 1902. Re-elected in 1904. Re-elected in 1906. Re-elected in 1908. | 1903–1913 | ||
| align=left | William F. Murray | Democratic | nowrap | March 4, 1911 – March 3, 1913 | Elected in 1910. | |||
| align=left | Ernest W. Roberts | Republican | nowrap | March 3, 1913 – March 3, 1917 | Elected in 1912. Re-elected in 1914. | 1913–1933 | ||
| align=left | Alvan T. Fuller | Republican | nowrap | March 4, 1917 – January 5, 1921 | Elected in 1916. Re-elected in 1918. Resigned after being elected Lieutenant Governor. | |||
| Vacant | nowrap | January 5, 1921 – March 3, 1921 | ||||||
| align=left | Charles L. Underhill | Republican | nowrap | March 4, 1921 – March 3, 1933 | Elected in 1920. Re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Re-elected in 1930. Retired. | |||
| align=left | Robert Luce | Republican | nowrap | March 4, 1933 – January 3, 1935 | Elected in 1932. | 1933–1943 | ||
| align=left | Richard M. Russell | Democratic | nowrap | January 3, 1935 – January 3, 1937 | Elected in 1934. | |||
| align=left | Robert Luce[15] | Republican | nowrap | January 3, 1937 – January 3, 1941 | Elected in 1936. Re-elected in 1938. | |||
| align=left | Thomas H. Eliot | Democratic | nowrap | January 3, 1941 – January 3, 1943 | Elected in 1940. Lost renomination. | |||
| align=left | Charles L. Gifford | Republican | nowrap | January 3, 1943 – August 23, 1947 | Elected in 1942. Re-elected in 1944. Re-elected in 1946. Died. | 1943–1953 | ||
| Vacant | nowrap | August 23, 1947 – November 18, 1947 | ||||||
Donald W. Nicholson | Republican | November 18, 1947 – January 3, 1959 | Elected to finish Gifford's term. Re-elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. | |||||
| 1953–1963 | ||||||||
| align=left | Hastings Keith | Republican | nowrap | January 3, 1959 – January 3, 1963 | Elected in 1958. Re-elected in 1960. Redistricted to . | |||
| align=left | John W. McCormack[16] | Democratic | nowrap | January 3, 1963 – January 3, 1971 | Redistricted from the and re-elected in 1962. Re-elected in 1964. Re-elected in 1966. Re-elected in 1968. Retired. | 1963–1973 | ||
| align=left | Louise Day Hicks | Democratic | nowrap | January 3, 1971 – January 3, 1973 | Elected in 1970. Lost re-election. | |||
Joe Moakley[17] | Democratic | January 3, 1973 – May 28, 2001 | Elected in 1972 as an Independent, but became a Democrat at beginning of the term Re-elected in 1974. Re-elected in 1976. Re-elected in 1978. Re-elected in 1980. Re-elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Re-elected in 1990. Re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Re-elected in 2000. Announced retirement, then died. | 1973–1983 | ||||
| 1983–1993 | ||||||||
| 1993–2003 | ||||||||
| Vacant | nowrap | May 28, 2001 – October 15, 2001 | ||||||
Stephen F. Lynch | Democratic | October 16, 2001 – January 3, 2013 | Elected to finish Moakley's term. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Re-elected in 2008. Re-elected in 2010. Redistricted to the . | |||||
| 2003–2013 | ||||||||
Bill Keating | Democratic | January 3, 2013 – present | Redistricted from the and re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Re-elected in 2020. Re-elected in 2022. | 2013–2023 | ||||
| 2023–present | ||||||||