39th United States Congress



The Thirty-ninth United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1865 to March 3, 1867, during the second administration of U.S. President Abraham Lincoln, and the first two years of the administration of his successor,  U.S. President Andrew Johnson.

The apportionment of seats in this House of Representatives was based on the Eighth Census of the United States in 1860. Both chambers had a Republican majority.

Dates of sessions
March 4, 1865 - March 3, 1867
 * Special session of the Senate: March 4, 1865 – March 11, 1865
 * First session: December 4, 1865 - July 28, 1866
 * Second session: December 3, 1866 - March 3, 1867
 * Previous congress: 38th Congress
 * Next congress: 40th Congress

Party summary
Tennessee was readmitted to representation in this Congress.

The count below identifies party affiliations at the beginning of the first session of this Congress, and includes members from vacancies and newly admitted states, when they were first seated. Changes resulting from subsequent replacements are shown below in the "Changes in membership" section.

Leadership

 * Senate


 * Vice President of the United States (President of the Senate):
 * Andrew Johnson, of Tennessee, succeeded to the presidency April 15, 1865, vacant thereafter.
 * President pro tempore of the Senate:
 * Lafayette S. Foster, Republican of Connecticut, elected May 7, 1865.
 * Benjamin F. Wade, Republican of Ohio, elected March 2, 1867.
 * House of Representatives


 * Speaker of the House
 * Schuyler Colfax, Republican of Indiana, reelected December 4, 1865.


 * House of Representatives


 * Republican Conference Chairman:
 * Justin S. Morrill of Vermont

Major events
Events of 1865, 1866 and 1867
 * April 15, 1865 -- Andrew Johnson became President of the United States

Major legislation
List of United States federal legislation in the 39th Congress
 * April 9, 1866 -- Civil Rights Act of 1866
 * July 16, 1866 -- Freedmen's Bureau Bill
 * March 1, 1867 -- Nebraska was admitted as a state into the Union.

Membership highlights by chamber
This list is arranged by chamber, then by state. Senators are listed in order of seniority, and Representatives are listed by district.

Senate
Senators were elected by the state legislatures every two years, with one-third beginning new six year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election. In this Congress, Class 1 meant their term began in the last Congress, requiring reelection in 1868; Class 2 meant their term began in this Congress, requiring reelection in 1870; and Class 3 meant their term ended in this Congress, requiring reelection in 1866.

House of Representatives
The names of members of the House of Representatives elected statewide on the general ticket or otherwise at-large, are preceded by an "A/L," and the names of those elected from districts, whether plural or single member, are preceded by their district numbers.

Many of the congressional district numbers are linked to articles describing the district itself. Since the boundaries of the districts have changed often and substantially, the linked article may only describe the district as it exists today, and not as it was at the time of this Congress.

Membership detail by state
Senators were elected by the state legislatures every two years, with one-third beginning new six year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election. In this Congress, Class 1 meant their term began in the last Congress, requiring reelection in 1868; Class 2 meant their term began in this Congress, requiring reelection in 1870; and Class 3 meant their term ended in this Congress, requiring reelection in 1866.

The names of members of the House of Representatives elected statewide on the general ticket or otherwise at-large, are preceded by an "A/L," and the names of those elected from districts, whether plural or single member, are preceded by their district numbers.

Many of the congressional district numbers are linked to articles describing the district itself. Since the boundaries of the districts have changed often and substantially, the linked article may only describe the district as it exists today, and not as it was at the time of this Congress.

The list below is arranged by state, then by chamber. Senators are shown in order of seniority, House members in district order.

Alabama

 * Senate


 * 2: vacant
 * 3: vacant
 * House of Representatives (6 seats)


 * all seats vacant

Arkansas

 * Senate


 * 2: vacant
 * 3: vacant
 * House of Representatives (3 seats)


 * all seats vacant

California

 * Senate


 * 3: James A. McDougall (1817-1867), Democratic
 * 1: John Conness (1821-1909), Republican
 * House of Representatives (3 seats)


 * 1: Donald C. McRuer (1826-1898), Republican
 * 2: William Higby (1813-1887), Republican
 * 3: John Bidwell (1819-1900), Republican

Connecticut

 * Senate


 * 3: La Fayette S. Foster (1806-1880), Republican
 * 1: James Dixon (1814-1873), Republican
 * House of Representatives (4 seats)


 * 1: Henry C. Deming (1815-1872), Republican
 * 2: Samuel L. Warner (1828-1893), Republican
 * 3: Augustus Brandegee (1828-1904), Republican
 * 4: John H. Hubbard (1804-1872), Republican

Delaware

 * Senate


 * 2: Willard Saulsbury, Sr. (1820-1892), Democratic
 * 1: George Read Riddle (1817-1867), Democratic
 * House of Representatives (1 seat)


 * A/L: John A. Nicholson (1827-1906), Democratic

Florida

 * Senate


 * 1: vacant
 * 3: vacant
 * House of Representatives (1 seat)


 * all seats vacant

Georgia

 * Senate


 * 2: vacant
 * 3: vacant
 * House of Representatives (7 seats)


 * all seats vacant

Illinois

 * Senate


 * 3: Lyman Trumbull (1813-1896), Republican
 * 2: Richard Yates (1815-1873), Republican
 * House of Representatives (14 seats)


 * 1: John Wentworth (1815-1888), Republican
 * 2: John F. Farnsworth (1820-1897), Republican
 * 3: Elihu B. Washburne (1816-1887), Republican
 * 4: Abner C. Harding (1807-1874), Republican
 * 5: Ebon C. Ingersoll (1831-1879), Republican
 * 6: Burton C. Cook (1819-1894), Republican
 * 7: Henry P. H. Bromwell (1823-1903), Republican
 * 8: Shelby M. Cullom (1829-1914), Republican
 * 9: Lewis W. Ross (1812-1895), Democratic
 * 10: Anthony Thornton (1814-1904), Democratic
 * 11: Samuel S. Marshall (1821-1890), Democratic
 * 12: Jehu Baker (1822-1903), Republican
 * 13: Andrew J. Kuykendall (1815-1891), Republican
 * A/L: Samuel W. Moulton (1821-1905), Republican

Indiana

 * Senate


 * 3: Henry S. Lane (1811-1881), Republican
 * 1: Thomas A. Hendricks (1819-1885), Democratic
 * House of Representatives (11 seats)


 * 1: William E. Niblack (1822-1893), Democratic
 * 2: Michael C. Kerr (1827-1876), Democratic
 * 3: Ralph Hill (1827-1899), Republican
 * 4: John H. Farquhar (1818-1873), Republican
 * 5: George W. Julian (1817-1899), Republican
 * 6: Ebenezer Dumont (1814-1871), Republican
 * 7: Daniel W. Voorhees (1827-1897), Democratic …contested election, served until February 23, 1866.
 * Henry D. Washburn (1832-1871), Republican ...contested election, seated February 23, 1866.
 * 8: Godlove S. Orth (1817-1882), Republican
 * 9: Schuyler Colfax (1823-1885), Republican
 * 10: Joseph H. Defrees (1812-1885), Republican
 * 11: Thomas N. Stilwell (1830-1874), Republican

Iowa

 * Senate


 * 3: James Harlan (1820-1899), Republican ...resigned May 15, 1865.
 * Samuel J. Kirkwood (1813-1894), Republican ...elected to fill vacancy, seated January 24, 1866.
 * 2: James W. Grimes (1816-1872), Republican
 * House of Representatives (6 seats)


 * 1: James F. Wilson (1828-1895), Republican
 * 2: Hiram Price (1814-1901), Republican
 * 3: William B. Allison (1829-1908), Republican
 * 4: Josiah B. Grinnell (1821-1891), Republican
 * 5: John A. Kasson (1822-1910), Republican
 * 6: Asahel W. Hubbard (1819-1879), Republican

Kansas

 * Senate


 * 3: Samuel C. Pomeroy (1816-1891), Republican
 * 2: James H. Lane (1814-1866), Republican ...died July 11, 1866.
 * Edmund G. Ross (1826-1907), Republican ...appointed to fill vacancy, seated July 25, 1866, subsequently elected.
 * House of Representatives (1 seat)


 * A/L: Sidney Clarke (1831-1909), Republican

Kentucky

 * Senate


 * 3: Garrett Davis (1801-1872), Democratic
 * 2: James Guthrie (1792-1869), Democratic
 * House of Representatives (9 seats)


 * 1: Lawrence S. Trimble (1825-1904), Democratic
 * 2: Burwell C. Ritter (1810-1880), Democratic
 * 3: Henry Grider (1796-1866), Democratic ...died September 14, 1866.
 * Elijah Hise (1802-1867), Democratic ...elected to fill vacancy, seated December 3, 1866.
 * 4: Aaron Harding (1805-1875), Democratic
 * 5: Lovell H. Rousseau (1818-1869), Unconditional Unionist ...resigned July 21, 1866, subsequently reelected, seated December 3, 1866.
 * 6: Green C. Smith (1826-1895), Unconditional Unionist ...resigned 1866.
 * Andrew H. Ward (1815-1904), Democratic ...elected to fill vacancy, seated December 3, 1866.
 * 7: George S. Shanklin (1807-1883), Democratic
 * 8: William H. Randall (1812-1881), Unconditional Unionist
 * 9: Samuel McKee (1833-1898), Unconditional Unionist

Louisiana

 * Senate


 * 2: vacant
 * 3: vacant
 * House of Representatives (5 seats)


 * all seats vacant

Maine

 * Senate


 * 1: Lot M. Morrill (1813-1883), Republican
 * 2: William Pitt Fessenden (1806-1869), Republican
 * House of Representatives (5 seats)


 * 1: John Lynch (1825-1892), Republican
 * 2: Sidney Perham (1819-1907), Republican
 * 3: James G. Blaine (1830-1893), Republican
 * 4: John H. Rice (1816-1911), Republican
 * 5: Frederick A. Pike (1816-1886), Republican

Maryland

 * Senate


 * 1: Reverdy Johnson (1796-1876), Democratic
 * 3: John A. J. Creswell (1828-1891), Unconditional Unionist ...died January 29, 1867.
 * House of Representatives (5 seats)


 * 1: Hiram McCullough (1813-1885), Democratic
 * 2: Edwin H. Webster (1829-1893), Unconditional Unionist ...resigned July 1865, before Congress assembled.
 * John L. Thomas, Jr. (1835-1893), Unconditional Unionist ...elected to fill vacancy, seated December 4, 1865.
 * 3: Charles E. Phelps (1833-1908), Unconditional Unionist
 * 4: Francis Thomas (1799-1876), Unconditional Unionist
 * 5: Benjamin G. Harris (1805-1895), Democratic

Massachusetts

 * Senate


 * 1: Charles Sumner (1811-1874), Republican
 * 2: Henry Wilson (1812-1875), Republican
 * House of Representatives (10 seats)


 * 1: Thomas D. Eliot (1808-1870), Republican
 * 2: Oakes Ames (1804-1873), Republican
 * 3: Alexander H. Rice (1818-1895), Republican
 * 4: Samuel Hooper (1808-1875), Republican
 * 5: John B. Alley (1817-1896), Republican
 * 6: Daniel W. Gooch (1820-1891), Republican ...resigned September 1, 1865, before Congress assembled.
 * Nathaniel P. Banks (1816-1894), Republican ...elected to fill vacancy, seated December 4, 1865.
 * 7: George S. Boutwell (1818-1905), Republican
 * 8: John D. Baldwin (1809-1883), Republican
 * 9: William B. Washburn (1820-1887), Republican
 * 10: Henry L. Dawes (1816-1903), Republican

Michigan

 * Senate


 * 1: Zachariah Chandler (1813-1879), Republican
 * 2: Jacob M. Howard (1805-1871), Republican
 * House of Representatives (6 seats)


 * 1: Fernando C. Beaman (1814-1882), Republican
 * 2: Charles Upson (1821-1885), Republican
 * 3: John W. Longyear (1820-1875), Republican
 * 4: Thomas W. Ferry (1827-1896), Republican
 * 5: Rowland E. Trowbridge (1821-1881), Republican
 * 6: John F. Driggs (1813-1877), Republican

Minnesota

 * Senate


 * 1: Alexander Ramsey (1815-1903), Republican
 * 2: Daniel S. Norton (1829-1870), Republican
 * House of Representatives (2 seats)


 * 1: William Windom (1827-1891), Republican
 * 2: Ignatius L. Donnelly (1831-1901), Republican

Mississippi

 * Senate


 * 1: vacant
 * 2: vacant
 * House of Representatives (5 seats)


 * all seats vacant

Missouri

 * Senate


 * 1: John B. Henderson (1826-1913), Republican
 * 3: B. Gratz Brown (1826-1885), Republican
 * House of Representatives (9 seats)


 * 1: John Hogan (1805-1892), Democratic
 * 2: Henry T. Blow (1817-1875), Republican
 * 3: Thomas E. Noell (1839-1867), Republican
 * 4: John R. Kelso (1831-1891), Independent Republican
 * 5: Joseph W. McClurg (1818-1900), Republican
 * 6: Robert T. Van Horn (1824-1916), Republican
 * 7: Benjamin F. Loan (1819-1881), Republican
 * 8: John F. Benjamin (1817-1877), Republican
 * 9: George W. Anderson (1832-1902), Republican

Nebraska

 * Senate


 * 2: John M. Thayer (1820-1906), Republican ...new state, seated March 4, 1867, in the next Congress.
 * 1: Thomas W. Tipton (1817-1899), Republican ...new state, seated March 4, 1867, in the next Congress.
 * House of Representatives (1 seat)


 * A/L: Turner M. Marquette (1831-1894), Republican ...new state, seated March 2, 1867.

Nevada

 * Senate


 * 1: William M. Stewart (1827-1909), Republican
 * 3: James W. Nye (1815-1876), Republican
 * House of Representatives (1 seat)


 * A/L: Delos R. Ashley (1828-1873), Republican

New Hampshire

 * Senate


 * 3: Daniel Clark (1809-1891), Republican ...resigned July 27, 1865.
 * George G. Fogg (1813-1881), Republican ...appointed to fill vacancy, seated December 3, 1866.
 * 2: Aaron H. Cragin (1821-1898), Republican
 * House of Representatives (3 seats)


 * 1: Gilman Marston (1811-1890), Republican
 * 2: Edward H. Rollins (1824-1889), Republican
 * 3: James W. Patterson (1823-1893), Republican

New Jersey

 * Senate


 * 1: William Wright (1794-1866), Democratic ...died November 1, 1866.
 * Alexander G. Cattell (1816-1894), Republican ...elected to fill vacancy, September 19, 1866.
 * 2: John P. Stockton (1826-1900), Democratic ...contested election, served until March 27, 1866, when his seat was declared vacant.
 * Frederick T. Frelinghuysen (1817-1885), Republican ...appointed to fill vacancy, November 12, 1866, subsequently elected.
 * House of Representatives (5 seats)


 * 1: John F. Starr (1818-1904), Republican
 * 2: William A. Newell (1817-1901), Republican
 * 3: Charles Sitgreaves (1803-1878), Democratic
 * 4: Andrew J. Rogers (1828-1900), Democratic
 * 5: Edwin R. V. Wright (1812-1871), Democratic

New York

 * Senate


 * 3: Ira Harris (1802-1875), Republican
 * 1: Edwin D. Morgan (1811-1883), Republican
 * House of Representatives (31 seats)


 * 1: Stephen Taber (1821-1886), Democratic
 * 2: Teunis G. Bergen (1806-1881), Democratic
 * 3: James Humphrey (1811-1866), Republican ...died June 16, 1866.
 * John W. Hunter (1807-1900), Democratic ...elected to fill vacancy, seated December 4, 1866.
 * 4: Morgan Jones (1830-1894), Democratic
 * 5: Nelson Taylor (1821-1894), Democratic
 * 6: Henry J. Raymond (1820-1869), Republican
 * 7: John W. Chanler (1826-1877), Democratic
 * 8: James Brooks (1810-1873), Democratic …contested election, served until April 7, 1866.
 * William E. Dodge (1805-1883), Republican ...contested election, seated April 7, 1866.
 * 9: William A. Darling (1817-1895), Republican
 * 10: William Radford (1814-1870), Democratic
 * 11: Charles H. Winfield (1822-1888), Democratic
 * 12: John H. Ketcham (1832-1906), Republican
 * 13: Edwin N. Hubbell (1815- ), Democratic
 * 14: Charles Goodyear (1804-1876), Democratic
 * 15: John A. Griswold (1822-1872), Republican
 * 16: Orlando Kellogg (1809-1865), Republican ...died August 24, 1865.
 * Robert S. Hale (1822-1881), Republican ...elected to fill vacancy, seated December 3, 1866.
 * 17: Calvin T. Hulburd (1809-1897), Republican
 * 18: James M. Marvin (1809-1901), Republican
 * 19: Demas Hubbard, Jr. (1806-1873), Republican
 * 20|20}}: Addison H. Laflin (1823-1878), Republican
 * 21|21}}: Roscoe Conkling (1829-1888), Republican ...resigned March 4, 1867.
 * 22|22}}: Sidney T. Holmes (1815-1890), Republican
 * 23|23}}: Thomas T. Davis (1810-1872), Republican
 * 24|24}}: Theodore M. Pomeroy (1824-1905), Republican
 * 25|25}}: Daniel Morris (1812-1889), Republican
 * 26|26}}: Giles W. Hotchkiss (1815-1878), Republican
 * 27|27}}: Hamilton Ward, Sr. (1829-1898), Republican
 * 28|28}}: Roswell Hart (1824-1883), Republican
 * 29|29}}: Burt Van Horn (1823-1896), Republican
 * 30|30}}: James M. Humphrey (1819-1899), Democratic
 * 31|31}}: Henry H. Van Aernam (1819-1894), Republican

North Carolina

 * Senate


 * 2: vacant
 * 3: vacant
 * House of Representatives (7seats)


 * all seats vacant

Ohio

 * Senate


 * 1: Benjamin F. Wade (1800-1878), Republican
 * 3: John Sherman (1823-1900), Republican
 * House of Representatives (19 seats)


 * 1: Benjamin Eggleston (1816-1888), Republican
 * 2: Rutherford B. Hayes (1822-1893), Republican
 * 3: Robert C. Schenck (1809-1890), Republican
 * 4: William Lawrence (1819-1899), Republican
 * 5: Francis C. Le Blond (1821-1902), Democratic
 * 6: Reader W. Clarke (1812-1872), Republican
 * 7: Samuel Shellabarger (1817-1896), Republican
 * 8: James R. Hubbell (1824-1890), Republican
 * 9: Ralph P. Buckland (1812-1892), Republican
 * 10: James M. Ashley (1824-1896), Republican
 * 11: Hezekiah S. Bundy (1817-1895), Republican
 * 12: William E. Finck (1822-1901), Democratic
 * 13: Columbus Delano (1809-1896), Republican
 * 14: Martin Welker (1819-1902), Republican
 * 15: Tobias A. Plants (1811-1887), Republican
 * 16: John A. Bingham (1815-1900), Republican
 * 17: Ephraim R. Eckley (1811-1908), Republican
 * 18: Rufus P. Spalding (1798-1886), Republican
 * 19: James A. Garfield (1831-1881), Republican

Oregon

 * Senate


 * 3: James W. Nesmith (1820-1885), Democratic
 * 2: George H. Williams (1823-1910), Republican
 * House of Representatives (1 seat)


 * A/L: James H. D. Henderson (1810-1885), Republican

Pennsylvania

 * Senate


 * 3: Edgar Cowan (1815-1885), Republican
 * 1: Charles R. Buckalew (1821-1899), Democratic
 * House of Representatives (24 seats)


 * 1: Samuel J. Randall (1828-1890), Democratic
 * 2: Charles O'Neill (1821-1893), Republican
 * 3: Leonard Myers (1827-1905), Republican
 * 4: William D. Kelley (1814-1890), Republican
 * 5: M. Russell Thayer (1819-1906), Republican
 * 6: Benjamin M. Boyer (1823-1887), Democratic
 * 7: John M. Broomall (1816-1894), Republican
 * 8: Sydenham E. Ancona (1824-1913), Democratic
 * 9: Thaddeus Stevens (1792-1868), Republican
 * 10: Myer Strouse (1825-1878), Democratic
 * 11: Philip Johnson (1818-1867), Democratic ...died January 29, 1867.
 * 12: Charles Denison (1818-1867), Democratic
 * 13: Ulysses Mercur (1818-1887), Republican
 * 14: George F. Miller (1809-1885), Republican
 * 15: Adam J. Glossbrenner (1810-1889), Democratic
 * 16: Alexander H. Coffroth (1828-1906), Democratic …contested election, served until July 18]] 1866.
 * William H. Koontz (1830-1911), Republican ...contested election, seated July 18, 1866.
 * 17: Abraham A. Barker (1816-1898), Republican
 * 18: Stephen F. Wilson (1821-1897), Republican
 * 19: Glenni W. Scofield (1817-1891), Republican
 * 20: Charles V. Culver (1830-1909), Republican
 * 21: John L. Dawson (1813-1870), Democratic
 * 22: James K. Moorhead (1806-1884), Republican
 * 23: Thomas Williams (1806-1872), Republican
 * 24: George V. Lawrence (1818-1904), Republican

Rhode Island

 * Senate


 * 2: Henry B. Anthony (1815-1884), Republican
 * 1: William Sprague (1830-1915), Republican
 * House of Representatives (2 seats)


 * 1: Thomas A. Jenckes (1818-1875), Republican
 * 2: Nathan F. Dixon, Jr. (1812-1881), Republican

South Carolina

 * Senate


 * 2: vacant
 * 3: vacant
 * House of Representatives (4 seats)


 * all seats vacant

Tennessee

 * Senate


 * 2: Joseph S. Fowler (1820-1902), Unconditional Unionist ...readmitted state, seated July 25, 1866.
 * 1: David T. Patterson (1818-1891), Unionist ...readmitted state, seated July 28, 1866.
 * House of Representatives (8 seats)


 * 1: Nathaniel G. Taylor (1819-1887), Unionist ...readmitted state, seated July 24, 1866.
 * 2: Horace Maynard (1814-1882), Unconditional Unionist ...readmitted state, seated July 24, 1866.
 * 3: William B. Stokes (1814-1897), Unconditional Unionist ...readmitted state, seated July 24, 1866.
 * 4: Edmund Cooper (1821-1911), Unionist ...readmitted state, seated July 25, 1866.
 * 5: William B. Campbell (1807-1867), Unionist ...readmitted state, seated December 3, 1866.
 * 6: Samuel M. Arnell (1833-1903), Unconditional Unionist ...readmitted state, seated December 3, 1866.
 * 7: Isaac R. Hawkins (1818-1880), Unionist ...readmitted state, seated December 3, 1866.
 * 8: John W. Leftwich (1826-1870), Unionist ...readmitted state, seated July 25, 1866.

Texas

 * Senate


 * 1: vacant
 * 2: vacant
 * House of Representatives (4 seats)


 * all seats vacant

Vermont

 * Senate


 * 1: Solomon Foot (1802-1866), Republican ...died March 28, 1866.
 * George F. Edmunds (1828-1919), Republican ...appointed to fill vacancy, seated April 3, 1866.
 * 3: Jacob Collamer (1791-1865), Republican ...died November 9, 1865.
 * Luke P. Poland (1815-1887), Republican ...appointed to fill vacancy, seated December 4, 1865.
 * House of Representatives (3 seats)


 * 1: Frederick E. Woodbridge (1818-1888), Republican
 * 2: Justin S. Morrill (1810-1898), Republican
 * 3: Portus Baxter (1806-1868), Republican

Virginia

 * Senate


 * 1: vacant
 * 2: vacant
 * House of Representatives (8 seats)


 * all seats vacant

West Virginia

 * Senate


 * 1: Peter G. Van Winkle (1808-1872), Unconditional Unionist
 * 2: Waitman T. Willey (1811-1900), Republican
 * House of Representatives (3 seats)


 * 1: Chester D. Hubbard (1814-1891), Unconditional Unionist
 * 2: George R. Latham (1832-1917), Unconditional Unionist
 * 3: Kellian V. Whaley (1821-1876), Unconditional Unionist

Wisconsin

 * Senate


 * 1: James R. Doolittle (1815-1897), Republican
 * 3: Timothy O. Howe (1816-1883), Republican
 * House of Representatives (6 seats)


 * 1: Halbert E. Paine (1826-1905), Republican
 * 2: Ithamar C. Sloan (1822-1898), Republican
 * 3: Amasa Cobb (1823-1905), Republican
 * 4: Charles A. Eldredge (1820-1896), Democratic
 * 5: Philetus Sawyer (1816-1900), Republican
 * 6: Walter D. McIndoe (1819-1872), Republican

Delegates

 * Arizona Territory


 * A/L: John N. Goodwin (1824-1887), Republican
 * Colorado Territory


 * A/L: Allen A. Bradford (1815-1888), Republican
 * Dakota Territory


 * A/L: Walter A. Burleigh (1820-1896), Republican
 * Idaho Territory


 * A/L: Edward D. Holbrook (1836-1870), Democratic
 * Montana Territory


 * A/L: Samuel McLean (1826-1877), Democratic
 * Nebraska Territory


 * A/L: Phineas W. Hitchcock (1831-1881), Republican ...admitted as a state, March 1, 1867.
 * New Mexico Territory


 * A/L: J. Francisco Chaves (1833-1904), Republican
 * Utah Territory


 * A/L: William H. Hooper (1813-1882), Democratic
 * Washington Territory


 * A/L: Arthur A. Denny (1822-1899), Republican

Membership detail by Chamber/Party
The list below is arranged by chamber, then by political party. Members are shown in alphabetical order.

Senate
Senators were elected by the state legislatures every two years, with one-third beginning new six year terms with each Congress.

House of Representatives
Members of the House of Representatives were elected by popular vote, variously to single member districts or at-large.

Changes in membership
The count below reflects changes from the beginning of the first session of this Congress.