These are tables of congressional delegations from Massachusetts to the United States House of Representatives and the United States Senate.

Current delegation Current U.S. senators from Massachusetts CPVI : Class I senator Class II senator Elizabeth Warren Ed Markey Party Incumbent since January 3, 2013 July 16, 2013 Massachusetts is currently represented by two senators and nine representatives, all of whom are Democrats. The current dean of the Massachusetts delegation is Representative Richard Neal, having served in Congress since 1989.

United States Senate

Class I senator Congress Class II senator Tristram Dalton (PA) (1789–1791) Caleb Strong (PA) George Cabot (PA) (1791–1793) (1793–1795) (1795–1797) Benjamin Goodhue (F) Theodore Sedgwick (F) (1797–1799) (1799–1801) Samuel Dexter (F) Jonathan Mason (F) Dwight Foster (F) (1801–1803) John Quincy Adams (F) (1803–1805) Timothy Pickering (F) (1805–1807) (1807–1809) James Lloyd (F) (1809–1811) (1811–1813) Joseph BradleyVarnum (DR) (1813–1815) Christopher Gore (F) (1815–1817) Eli P. Ashmun (F) (1817–1819) Harrison Gray Otis (F) Prentiss Mellen (F) (1819–1821) Elijah H. Mills (F) (1821–1823) James Lloyd (F) (1823–1825) Elijah H. Mills (NR) (1825–1827) James Lloyd (NR) Nathaniel Silsbee (NR) Daniel Webster (NR) (1827–1829) (1829–1831) (1831–1833) (1833–1835) (1835–1837) John Davis (NR) Daniel Webster (W) (1837–1839) John Davis (W) (1839–1841) Isaac C. Bates (W) Rufus Choate (W) (1841–1843) (1843–1845) Daniel Webster (W) (1845–1847) John Davis (W) (1847–1849) (1849–1851) Robert C. Winthrop (W) Robert Rantoul Jr. (D) Charles Sumner (FS) (1851–1853) (1853–1855) Edward Everett (W) Julius Rockwell (W) Henry Wilson (FS) (1855–1857) Henry Wilson (R) Charles Sumner (R) (1857–1859) (1859–1861) (1861–1863) (1863–1865) (1865–1867) (1867–1869) (1869–1871) (1871–1873) Charles Sumner (LR) (1873–1875) George S. Boutwell (R) William B. Washburn (R) Henry L. Dawes (R) (1875–1877) (1877–1879) George F. Hoar (R) (1879–1881) (1881–1883) (1883–1885) (1885–1887) (1887–1889) (1889–1891) (1891–1893) Henry Cabot Lodge (R) (1893–1895) (1895–1897) (1897–1899) (1899–1901) (1901–1903) (1903–1905) Winthrop M. Crane (R) (1905–1907) (1907–1909) (1909–1911) (1911–1913) (1913–1915) John W. Weeks (R) (1915–1917) (1917–1919) (1919–1921) David I. Walsh (D) (1921–1923) (1923–1925) William M. Butler (R) (1925–1927) Frederick H. Gillett (R) David I. Walsh (D) (1927–1929) (1929–1931) (1931–1933) Marcus A. Coolidge (D) (1933–1935) (1935–1937) (1937–1939) Henry Cabot Lodge Jr. (R) (1939–1941) (1941–1943) (1943–1945) Sinclair Weeks (R) (1945–1947) Leverett Saltonstall (R) Henry Cabot Lodge Jr. (R) (1947–1949) (1949–1951) (1951–1953) John F. Kennedy (D) (1953–1955) (1955–1957) (1957–1959) (1959–1961) Benjamin A. Smith II (D) (1961–1963) Ted Kennedy (D) (1963–1965) (1965–1967) (1967–1969) Edward Brooke (R) (1969–1971) (1971–1973) (1973–1975) (1975–1977) (1977–1979) (1979–1981) Paul Tsongas (D) (1981–1983) (1983–1985) John Kerry (D) (1985–1987) (1987–1989) (1989–1991) (1991–1993) (1993–1995) (1995–1997) (1997–1999) (1999–2001) (2001–2003) (2003–2005) (2005–2007) (2007–2009) (2009–2011) Paul G. Kirk (D) Scott Brown (R) (2011–2013) Elizabeth Warren (D) (2013–2015) Mo Cowan (D) Ed Markey (D) (2015–2017) (2017–2019) (2019–2021) (2021–2023) (2023–2025) (2025–2027)

United States House of Representatives

1789 to 1793: 8 seats Article I of the United States Constitution allocated 8 seats to Massachusetts.

Congress District FisherAmes (PA) BenjaminGoodhue (PA) ElbridgeGerry (AA) TheodoreSedgwick (PA) George Partridge (PA) GeorgeThatcher (PA) GeorgeLeonard (PA) Jonathan Grout (AA) vacant Shearjashub Bourne (PA) George Leonard (PA) Artemas Ward (PA) George Thatcher (PA)

1793 to 1803: 14 seats After the 1790 census, Massachusetts gained six seats.

In the third Congress only, there were plural districts in which more than one member would be elected from the same district and there was also an at-large seat. After that Congress, however, there would be no at-large seats and no plural seats.

Congress District (4 seats) (4 seats) (2 seats) (3 seats) SamuelHolten (AA) BenjaminGoodhue (PA) SamuelDexter (PA) FisherAmes (PA) DwightFoster (PA) TheodoreSedgwick (PA) WilliamLyman (AA) ArtemasWard (PA) Peleg CoffinJr. (PA) ShearjashubBourne (PA) PelegWadsworth (PA) HenryDearborn (AA) GeorgeThatcher (PA) DavidCobb (PA) Congress District (1795–1797) TheodoreSedgwick (F) WilliamLyman (DR) SamuelLyman (F) DwightFoster (F) NathanielFreemanJr. (DR) John ReedSr. (F) GeorgeLeonard (F) FisherAmes (F) JosephBradleyVarnum (DR) BenjaminGoodhue (F) TheophilusBradbury (F) HenryDearborn (DR) PelegWadsworth(F) GeorgeThatcher(F) Thomson J.Skinner (DR) SamuelSewall (F) (1797–1799) WilliamShepard (F) StephenBullock (F) HarrisonGrayOtis (F) IsaacParker (F) BaileyBartlett (F) TheodoreSedgwick (F) LemuelWilliams(F) PhanuelBishop(DR) Silas Lee (F) EbenezerMattoon (F) Levi LincolnSr. (DR) NathanRead (F) (1801–1803) JohnBacon (DR) JosiahSmith (DR) WilliamEustis (DR) ManassehCutler (F) RichardCutts (DR) Seth Hastings (F) Samuel Thatcher (F)

1803 to 1813: 17 seats After the 1800 census, Massachusetts gained three seats.

Cong­ress District District (1803–1805) WilliamEustis (DR) JacobCrowninshield(DR) ManassehCutler (F) JosephBradleyVarnum(DR) ThomasDwight (F) SamuelTaggart(F) NahumMitchell (F) LemuelWilliams (F) PhanuelBishop(DR) SethHastings (F) WilliamStedman(F) Thomson Skinner (DR) EbenezerSeaver(DR) RichardCutts(DR) PelegWadsworth(F) SamuelThatcher (F) PhineasBruce (F) Simon Larned (DR) (1805–1807) JosiahQuincy III(F) JeremiahNelson (F) WilliamEly (F) JosephBarker (DR) Isaiah L.Green(DR) BarnabasBidwell (DR) OrchardCook(DR) JohnChandler(DR) (1807–1809) EdwardSt. LoeLivermore(F) JosiahDean (DR) JabezUpham (F) EzekielBacon (DR) DanielIlsley(DR) Joseph Story (DR) (1809–1811) BenjaminPickman Jr. (F) William Baylies (F) GideonGardner(DR) LabanWheaton(F) EzekielWhitman(F) BarzillaiGannett(DR) Charles Turner (DR) Joseph Allen (F) AbijahBigelow(F) (1811–1813) WilliamReed (F) LeonardWhite (F) William M.Richardson(DR) Isaiah L.Green(DR) ElijahBrigham (F) WilliamWidgery(DR) PelegTallman(DR) Francis Carr (DR)

1813 to 1823: 20 seats, then 13 After the 1810 census, Massachusetts gained three seats to grow to its largest apportionment (so far). In 1820/21, however, seven of those seats were lost to the new state of Maine.

Cong­ress District ArtemasWardJr. (F) WilliamReed (F) TimothyPickering(F) William M.Richardson (DR) WilliamEly (F) SamuelTaggart(F) WilliamBaylies(F) JohnReed Jr.(F) LabanWheaton(F) ElijahBrigham(F) AbijahBigelow(F) DanielDewey (F) NathanielRuggles(F) CyrusKing(F) GeorgeBradbury(F) SamuelDavis (F) AbielWood(DR) JohnWilson(F) JamesParker(DR) LeviHubbard(DR) Samuel Dana (DR) John Hulbert (F) (1815–1817) TimothyPickering (F) JeremiahNelson(F) AsahelStearns (F) Elijah H.Mills(F) John W.Hulbert (F) WilliamBaylies (F) JohnReed Jr. (F) LabanWheaton (F) ElijahBrigham (F) SolomonStrong(F) BenjaminBrown (F) JamesCarr (F) ThomasRice(F) Samuel S.Conner (DR) AlbionParris(DR) BenjaminAdams(F) (1817–1819) JonathanMason (F) NathanielSilsbee(DR) TimothyFuller(DR) SamuelClessonAllen(F) HenryShaw(DR) ZabdielSampson(DR) WalterFolger Jr.(DR) MarcusMorton(DR) JohnHolmes(DR) EzekielWhitman(F) BenjaminOrr (F) JohnWilson (F) JoshuaGage (DR) EnochLincoln(DR) (1819–1821) SamuelLathrop(F) JonasKendall (F) EdwardDowse (DR) Mark LangdonHill (DR) MartinKinsley (DR) JamesParker (DR) JoshuaCushman (DR) BenjaminGorham(DR) AaronHobart(DR) WilliamEustis(DR) vacant District ofMaine split (1821–1823) GideonBarstow (DR) Henry W.Dwight (F) JohnReed Jr. (F) FrancisBaylies (F) JonathanRussell (DR) LewisBigelow (F)

1823–1833: 13 seats Following the 1820 census, Massachusetts kept its remaining 13 seats without change. Cong­ress District DanielWebster (F) Benjamin W.Crownin­shield (DR) JeremiahNelson (F) TimothyFuller (DR) JonasSibley (DR) JohnLocke (DR) Samuel ClessonAllen (F) SamuelLathrop (F) Henry W.Dwight (F) JohnBailey (DR) AaronHobart (DR) FrancisBaylies (F) John ReedJr. (F) DanielWebster (NR) Benjamin W.Crownin­shield (NR) JohnVarnum (NR) EdwardEverett (NR) JohnDavis (NR) JohnLocke (NR) Samuel ClessonAllen (NR) SamuelLathrop (NR) Henry W.Dwight (NR) JohnBailey (NR) AaronHobart (NR) FrancisBaylies (J) John ReedJr. (NR) Isaac C.Bates (NR) JosephRichardson (NR) James L.Hodges (NR) BenjaminGorham (NR) Joseph G.Kendall (NR) GeorgeGrennellJr. (NR) NathanAppleton (NR) RufusChoate (NR) JeremiahNelson (NR) George N.Briggs (NR) Henry A. S.Dearborn (NR) John QuincyAdams (NR)

1833 to 1843: 12 seats After the 1830 census, Massachusetts lost one seat.

Congress District BenjaminGorham (NR) Rufus Choate (NR) Gayton P.Osgood (J) EdwardEverett (NR) John Davis (NR) GeorgeGrennellJr. (NR) GeorgeN.Briggs(NR) Isaac C.Bates (NR) WilliamJackson() WilliamBaylies (NR) John ReedJr. (NR) JohnQuincyAdams() StephenPhilips (NR) Levi LincolnJr. (NR) (1835–1837) AbbottLawrence (NR) CalebCushing (NR) SamuelHoar (NR) William B.Calhoun (NR) Nathaniel B.Borden (J) John ReedJr. () (1837–1839) RichardFletcher (W) Stephen Phillips (W) CalebCushing(W) WilliamParmenter (D) Levi LincolnJr. (W) GeorgeGrennell Jr. (W) GeorgeN.Briggs(W) WilliamB.Calhoun(W) WilliamSodenHastings(W) Nathaniel B.Borden (D) John ReedJr. (W) JohnQuincyAdams(W) LeverettSaltonstall I(W) (1839–1841) Abbott Lawrence (W) James Alvord (W) HenryWilliams (D) Robert C.Winthrop (W) OsmynBaker (W) (1841–1843) Nathaniel B.Borden (W) BarkerBurnell(W) Nathan Appleton (W) CharlesHudson (W) Robert C.Winthrop (W)

1843 to 1853: 10 seats After the 1840 census, Massachusetts lost two seats.

Congress District Robert CharlesWinthrop (W) Daniel P.King (W) AmosAbbott (W) WilliamParmenter (D) CharlesHudson (W) OsmynBaker (W) JuliusRockwell (W) John QuincyAdams (W) HenryWilliams (D) BarkerBurnell (W) JosephGrinnell (W) (1845–1847) BenjaminThompson (W) GeorgeAshmun (W) ArtemasHale (W) (1847–1849) John G.Palfrey (W) HoraceMann (W) (1849–1851) James H.Duncan (W) vacant CharlesAllen (FS) OrinFowler (W) Samuel A. Eliot (W) (1851–1853) WilliamAppleton (W) Robert Rantoul (D) Benjamin Thompson (W) George T.Davis (W) John Z.Goodrich (W) ZenoScudder (W) Francis B. Fay (W) Lorenzo Sabine (W) Edward P. Little (D)

1853 to 1863: 11 seats After the 1850 census, Massachusetts gained one seat.

Congress District Zeno Scudder (W) Samuel L.Crocker (W) J. WileyEdmands (W) Samuel H.Walley (W) WilliamAppleton (W) Charles W.Upham (W) Nathaniel P.Banks (D) TappanWentworth (W) AlexanderDe Witt (FS) EdwardDickinson (W) John Z.Goodrich (W) Thomas D. Eliot (W) (1855–1857) Robert BernardHall (KN) JamesBuffington (KN) William S.Damrell (KN) Linus B.Comins (KN) AnsonBurlingame (KN) TimothyDavis (KN) Nathaniel P.Banks (KN) Chauncey L.Knapp (KN) AlexanderDe Witt (KN) Calvin C.Chaffee (KN) MarkTrafton (KN) (1857–1859) Robert BernardHall (R) JamesBuffington (R) William S.Damrell (R) Linus BComins (R) AnsonBurlingame (R) TimothyDavis (R) Nathaniel P.Banks (R) Chauncey L.Knapp (R) EliThayer (R) Calvin C.Chaffee (R) Henry L.Dawes (R) Daniel W.Gooch (R) (1859–1861) Thomas D.Eliot (R) Charles FrancisAdams Sr. (R) AlexanderH. Rice (R) John B.Alley (R) Charles R.Train (R) CharlesDelano (R) (1861–1863) William Appleton (U) Goldsmith Bailey (R) Benjamin Thomas (U) Samuel Hooper (U) Amasa Walker (R)

1863 to 1873: 10 seats After the 1860 census, Massachusetts lost one seat.

Congress District Thomas D.Eliot (R) OakesAmes (R) AlexanderH. Rice (R) SamuelHooper (R) John B.Alley (R) Daniel W.Gooch (R) George S.Boutwell (R) John D.Baldwin (R) William B.Washburn (R) Henry L.Dawes (R) (1865–1867) Nathaniel P.Banks (R) (1867–1869) GineryTwichell (R) BenjaminButler (R) (1869–1871) JamesBuffington(R) George F.Hoar (R) George M. Brooks (R) (1871–1873) Constantine Esty (R) Alvah Crocker (R)

1873 to 1883: 11 seats After the 1870 census, Massachusetts gained one seat.