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. :
Skip to House of Representatives, below ====
Alabama ==== : 2. Vacant : 3. Vacant ====
Arkansas ==== : 2. Vacant : 3. Vacant ====
California ==== : 1.
John Conness (R) : 3.
James A. McDougall (D) ====
Connecticut ==== : 1.
James Dixon (R) : 3.
Lafayette S. Foster (R) ====
Delaware ==== : 1.
George R. Riddle (D) : 2.
Willard Saulsbury Sr. (D) ====
Florida ==== : 1. Vacant : 3. Vacant ====
Georgia ==== : 2. Vacant : 3. Vacant ====
Illinois ==== : 2.
Richard Yates (R) : 3.
Lyman Trumbull (R) ====
Indiana ==== : 1.
Thomas A. Hendricks (D) : 3.
Henry S. Lane (R) ====
Iowa ==== : 2.
James W. Grimes (R) : 3.
James Harlan (R), until May 15, 1865 ::
Samuel J. Kirkwood (R), from January 13, 1866 ====
Kansas ==== : 2.
Jim Lane (R), until July 11, 1866 ::
Edmund G. Ross (R), from July 19, 1866 : 3.
Samuel C. Pomeroy (R) ====
Kentucky ==== : 2.
James Guthrie (D) : 3.
Garrett Davis (U) ====
Louisiana ==== : 2. Vacant : 3. Vacant ====
Maine ==== : 1.
Lot M. Morrill (R) : 2.
William P. Fessenden (R) ====
Maryland ==== : 1.
Reverdy Johnson (D) : 3.
John A. J. Creswell (UU), from March 9, 1865 ====
Massachusetts ==== : 1.
Charles Sumner (R) : 2.
Henry Wilson (R) ====
Michigan ==== : 1.
Zachariah Chandler (R) : 2.
Jacob M. Howard (R) ====
Minnesota ==== : 1.
Alexander Ramsey (R) : 2.
Daniel S. Norton (R) ====
Mississippi ==== : 1. Vacant : 2. Vacant ====
Missouri ==== : 1.
John B. Henderson (R) : 3.
B. Gratz Brown (R) ====
Nebraska ==== : 1.
Thomas Tipton (R), from March 1, 1867 (newly admitted state) : 2.
John M. Thayer (R), from March 1, 1867 (newly admitted state) ====
Nevada ==== : 1.
William M. Stewart (R) : 3.
James W. Nye (R) ====
New Hampshire ==== : 2.
Aaron H. Cragin (R) : 3.
Daniel Clark (R), until July 27, 1866 ::
George G. Fogg (R), from August 31, 1866 ====
New Jersey ==== : 1.
William Wright (D), until November 1, 1866 ::
Frederick T. Frelinghuysen (R), from November 12, 1866 : 2.
John P. Stockton (D), March 15, 1865 – March 27, 1866 ::
Alexander G. Cattell (R), from September 19, 1866 ====
New York ==== : 3.
Ira Harris (R) : 1.
Edwin D. Morgan (R) ====
North Carolina ==== : 2. Vacant : 3. Vacant ====
Ohio ==== : 1.
Benjamin Wade (R) : 3.
John Sherman (R) ====
Oregon ==== : 2.
George H. Williams (R) : 3.
James W. Nesmith (D) ====
Pennsylvania ==== : 1.
Charles R. Buckalew (D) : 3.
Edgar Cowan (R) ====
Rhode Island ==== : 1.
William Sprague IV (R) : 2.
Henry B. Anthony (R) ====
South Carolina ==== : 2. Vacant : 3. Vacant ====
Tennessee ==== : 1.
David T. Patterson (U), from July 28, 1866 : 2.
Joseph S. Fowler (U), from July 24, 1866 ====
Texas ==== : 1. Vacant : 2. Vacant ====
Vermont ==== : 1.
Solomon Foot (R), until March 28, 1866 ::
George F. Edmunds (R), from April 3, 1866 : 3.
Jacob Collamer (R), until November 9, 1865 ::
Luke P. Poland (R), from November 21, 1865 ====
Virginia ==== : 1. Vacant : 2. Vacant ====
West Virginia ==== : 1.
Peter G. Van Winkle (UU) : 2.
Waitman T. Willey (R) ====
Wisconsin ==== : 1.
James R. Doolittle (R) : 3.
Timothy O. Howe (R) , until March 2, 1867 , from March 2, 1867
House of Representatives The names of representatives are preceded by their district numbers. ====
Alabama ==== : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant ====
Arkansas ==== : . Vacant : . Vacant : . Vacant ====
California ==== (3 Republicans) : .
Donald C. McRuer (R) : .
William Higby (R) : .
John Bidwell (R) ====
Connecticut ==== (4 Republicans) : .
Henry C. Deming (R) : .
Samuel L. Warner (R) : .
Augustus Brandegee (R) : .
John H. Hubbard (R) ====
Delaware ==== (1 Democrat) : .
John A. Nicholson (D) ====
Florida ==== : . Vacant ====
Georgia ==== : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant ====
Illinois ==== (11–3 Republican) : .
John Wentworth (R) : .
John F. Farnsworth (R) : .
Elihu B. Washburne (R) : .
Abner C. Harding (R) : .
Ebon C. Ingersoll (R) : .
Burton C. Cook (R) : .
Henry P. H. Bromwell (R) : .
Shelby M. Cullom (R) : .
Lewis Winans Ross (D) : .
Anthony Thornton (D) : .
Samuel S. Marshall (D) : .
Jehu Baker (R) : .
Andrew J. Kuykendall (R) : .
Samuel W. Moulton (R) ====
Indiana ==== (8–3 Republican) : .
William E. Niblack (D) : .
Michael C. Kerr (D) : .
Ralph Hill (R) : .
John H. Farquhar (R) : .
George W. Julian (R) : .
Ebenezer Dumont (R) : .
Daniel W. Voorhees (D), until February 23, 1866 ::
Henry D. Washburn (R), from February 23, 1866 : .
Godlove S. Orth (R) : .
Schuyler Colfax (R) : .
Joseph H. Defrees (R) : .
Thomas N. Stilwell (R) ====
Iowa ==== (6 Republicans) : .
James F. Wilson (R) : .
Hiram Price (R) : .
William B. Allison (R) : .
Josiah B. Grinnell (R) : .
John A. Kasson (R) : .
Asahel W. Hubbard (R) ====
Kansas ==== (1 Republican) : .
Sidney Clarke (R) ====
Kentucky ==== (4–5 Democratic) : .
Lawrence S. Trimble (D) : .
Burwell C. Ritter (D) : .
Henry Grider (D), until September 7, 1866 ::
Elijah Hise (D), from December 3, 1866 : .
Aaron Harding (D) : .
Lovell H. Rousseau (UU), until July 21, 1866, and from December 3, 1866 : .
Green C. Smith (UU), until July ??, 1866 ::
Andrew H. Ward (D), from December 3, 1866 : .
George S. Shanklin (D) : .
William H. Randall (UU) : .
Samuel McKee (UU) ====
Louisiana ==== : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant ====
Maine ==== (5 Republicans) : .
John Lynch (R) : .
Sidney Perham (R) : .
James G. Blaine (R) : .
John H. Rice (R) : .
Frederick A. Pike (R) ====
Maryland ==== (3–2 Unconditional Unionist) : .
Hiram McCullough (D) : .
Edwin H. Webster (UU), until July ??, 1865 ::
John L. Thomas Jr. (UU), from December 4, 1865 : .
Charles E. Phelps (UU) : .
Francis Thomas (UU) : .
Benjamin G. Harris (D) ====
Massachusetts ==== (10 Republicans) : .
Thomas D. Eliot (R) : .
Oakes Ames (R) : .
Alexander H. Rice (R) : .
Samuel Hooper (R) : .
John B. Alley (R) : .
Daniel W. Gooch (R), until September 1, 1865 ::
Nathaniel P. Banks (R), from December 4, 1865 : .
George S. Boutwell (R) : .
John D. Baldwin (R) : .
William B. Washburn (R) : .
Henry L. Dawes (R) ====
Michigan ==== (6 Republicans) : .
Fernando C. Beaman (R) : .
Charles Upson (R) : .
John W. Longyear (R) : .
Thomas W. Ferry (R) : .
Rowland E. Trowbridge (R) : .
John F. Driggs (R) ====
Minnesota ==== (2 Republicans) : .
William Windom (R) : .
Ignatius L. Donnelly (R) ====
Mississippi ==== : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant ====
Missouri ==== (8–1 Republican) : .
John Hogan (D) : .
Henry T. Blow (R) : .
Thomas E. Noell (R) : .
John R. Kelso (IR) : .
Joseph W. McClurg (R) : .
Robert T. Van Horn (R) : .
Benjamin F. Loan (R) : .
John F. Benjamin (R) : .
George W. Anderson (R) ====
Nebraska ==== (1 Republican) : .
Turner M. Marquette (R), from March 2, 1867 (newly admitted state) ====
Nevada ==== (1 Republican) : .
Delos R. Ashley (R) ====
New Hampshire ==== (3 Republicans) : .
Gilman Marston (R) : .
Edward H. Rollins (R) : .
James W. Patterson (R) ====
New Jersey ==== (3–2 Democratic) : .
John F. Starr (R) : .
William A. Newell (R) : .
Charles Sitgreaves (D) : .
Andrew J. Rogers (D) : .
Edwin R. V. Wright (D) ====
New York ==== (20–11 Republican) : .
Stephen Taber (D) : .
Teunis G. Bergen (D) : .
James Humphrey (R), until June 16, 1866 ::
John W. Hunter (D), from December 4, 1866 : .
Morgan Jones (D) : .
Nelson Taylor (D) : .
Henry J. Raymond (R) : .
John W. Chanler (D) : .
James Brooks (D), until April 7, 1866 ::
William E. Dodge (R), from April 7, 1866 : .
William A. Darling (R) : .
William Radford (D) : .
Charles H. Winfield (D) : .
John H. Ketcham (R) : .
Edwin N. Hubbell (D) : .
Charles Goodyear (D) : .
John Augustus Griswold (R) : .
Orlando Kellogg (R), until August 24, 1865 ::
Robert S. Hale (R), from December 3, 1865 : .
Calvin T. Hulburd (R) : .
James M. Marvin (R) : .
Demas Hubbard Jr. (R) : .
Addison H. Laflin (R) : .
Roscoe Conkling (R) : .
Sidney T. Holmes (R) : .
Thomas T. Davis (R) : .
Theodore M. Pomeroy (R) : .
Daniel Morris (R) : .
Giles W. Hotchkiss (R) : .
Hamilton Ward Sr. (R) : .
Roswell Hart (R) : .
Burt Van Horn (R) : .
James M. Humphrey (D) : .
Henry H. Van Aernam (R) ====
North Carolina ==== : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant ====
Ohio ==== (17–2 Republican) : .
Benjamin Eggleston (R) : .
Rutherford B. Hayes (R) : .
Robert C. Schenck (R) : .
William Lawrence (R) : .
Francis C. Le Blond (D) : .
Reader W. Clarke (R) : .
Samuel Shellabarger (R) : .
James R. Hubbell (R) : .
Ralph P. Buckland (R) : .
James M. Ashley (R) : .
Hezekiah S. Bundy (R) : .
William E. Finck (D) : .
Columbus Delano (R) : .
Martin Welker (R) : .
Tobias A. Plants (R) : .
John Bingham (R) : .
Ephraim R. Eckley (R) : .
Rufus P. Spalding (R) : .
James A. Garfield (R) ====
Oregon ==== (1 Republican) : .
James H. D. Henderson (R) ====
Pennsylvania ==== (15–9 Republican) : .
Samuel J. Randall (D) : .
Charles O'Neill (R) : .
Leonard Myers (R) : .
William D. Kelley (R) : .
M. Russell Thayer (R) : .
Benjamin M. Boyer (D) : .
John M. Broomall (R) : .
Sydenham E. Ancona (D) : .
Thaddeus Stevens (R) : .
Myer Strouse (D) : .
Philip Johnson (D), until January 29, 1867 : .
Charles Denison (D) : .
Ulysses Mercur (R) : .
George F. Miller (R) : .
Adam J. Glossbrenner (D) : .
Alexander H. Coffroth (D), February 19, 1866 – July 18, 1866 ::
William H. Koontz (R), from July 18, 1866 : .
Abraham A. Barker (R) : .
Stephen F. Wilson (R) : .
Glenni W. Scofield (R) : .
Charles V. Culver (R) : .
John L. Dawson (D) : .
James K. Moorhead (R) : .
Thomas Williams (R) : .
George V. Lawrence (R) ====
Rhode Island ==== (2 Republicans) : .
Thomas A. Jenckes (R) : .
Nathan F. Dixon Jr. (R) ====
South Carolina ==== : . Vacant : . Vacant : . Vacant : . Vacant ====
Tennessee ==== (4 Unconditional Unionists; 4 Unionists) : .
Nathaniel G. Taylor (U), from July 24, 1866 : .
Horace Maynard (UU), from July 24, 1866 : .
William B. Stokes (UU), from July 24, 1866 : .
Edmund Cooper (U), from July 24, 1866 : .
William B. Campbell (U), from July 24, 1866 : .
Samuel M. Arnell (UU), from July 24, 1866 : .
Isaac R. Hawkins (U), from July 24, 1866 : .
John W. Leftwich (UU), from July 24, 1866 ====
Texas ==== : . Vacant : . Vacant : . Vacant : . Vacant ====
Vermont ==== (3 Republicans) : .
Frederick E. Woodbridge (R) : .
Justin S. Morrill (R) : .
Portus Baxter (R) ====
Virginia ==== : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant : . Vacant ====
West Virginia ==== (3 Unconditional Unionists) : .
Chester D. Hubbard (UU) : .
George R. Latham (UU) : .
Kellian Whaley (UU) ====
Wisconsin ==== (5–1 Republican) : .
Halbert E. Paine (R) : .
Ithamar C. Sloan (R) : .
Amasa Cobb (R) : .
Charles A. Eldredge (D) : .
Philetus Sawyer (R) : .
Walter D. McIndoe (R)
Non-voting members (6–3 Republican) : .
John N. Goodwin (R) : .
Allen A. Bradford (R) : .
Walter A. Burleigh (R) : .
Edward D. Holbrook (D) : .
Samuel McLean (D) : .
Phineas W. Hitchcock (R), until March 1, 1867 : .
J. Francisco Chaves (R) : .
William H. Hooper (D) : .
Arthur A. Denny (R) ==Changes in membership==