# List of United States senators in the 28th Congress

This is a complete list of members of the United States Senate during the 28th United States Congress listed by seniority, from March 4, 1843, to March 3, 1845.
Order of service is based on the commencement of the senator's first term. Behind this is former service as a senator (only giving the senator seniority within his or her new incoming class), service as vice president, a House member, a cabinet secretary, or a governor of a state. The final factor is the population of the senator's state.
Senators who were sworn in during the middle of the two-year congressional term (up until the last senator who was not sworn in early after winning the November 1844 election) are listed at the end of the list with no number.

## Terms of service

| Class | Terms of service of senators that expired in years |
| Class 1 | Terms of service of senators that expired in 1845 (CT, DE, FL, IN, MA, MD, ME, MI, MO, MS, NJ, NY, OH, PA, RI, TN, VA, and VT.) |
| Class 2 | Terms of service of senators that expired in 1847 (AL, AR, DE, GA, IL, KY, LA, MA, ME, MI, MS, NC, NH, NJ, RI, SC, TN, and VA.) |
| Class 3 | Terms of service of senators that expired in 1849 (AL, AR, CA, CT, FL, GA, IL, IN, KY, LA, MD, MO, NC, NH, NY, OH, PA, SC, and VT.) |

## U.S. Senate seniority list

U.S. Senate seniority :
| Rank | Senator (party-state) | Seniority date | Other factors |
| 1 | William Rufus de Vane King (D-AL) | December 14, 1819 | |
| 2 | Thomas Hart Benton (D-MO) | August 10, 1821 |
| 3 | Silas Wright, Jr. (D-NY) | January 4, 1833 |
| 4 | Nathaniel Pitcher Tallmadge (W-NY) | March 4, 1833 |
| 5 | Lewis Fields Linn (D-MO) | October 25, 1833 |
| 6 | James Buchanan (D-PA) | December 6, 1834 |
| 7 | Robert John Walker (D-MS) | March 4, 1835 |
| 8 | William Cabell Rives (W-VA) | March 4, 1836 |
| 9 | Richard Henry Bayard (W-DE) | June 17, 1836 |
| 10 | Ambrose Hundley Sevier (D-AR) | September 18, 1836 | Former delegate |
| 11 | William Savin Fulton (D-AR) | September 18, 1836 |
| 12 | Thomas Clayton (W-DE) | January 9, 1837 |
| 13 | William Allen (D-OH) | March 4, 1837 |
| 14 | William Duhurst Merrick (W-MD) | January 4, 1838 |
| 15 | Albert Smith White (W-IN) | March 4, 1839 | Former representative |
| 16 | Benjamin Tappan (D-OH) | March 4, 1839 | Ohio 5th in population (1830) |
| 17 | Samuel Shethar Phelps (W-VT) | March 4, 1839 | Vermont 17th in population (1830) |
| 18 | John Henderson (W-MS) | March 4, 1839 | Mississippi 22nd in population (1830) |
| 19 | Daniel Sturgeon (D-PA) | January 14, 1840 |
| 20 | Augustus Seymour Porter (W-MI) | January 20, 1840 |
| 21 | Jabez Williams Huntington (W-CT) | May 4, 1840 |
| 22 | Willie Person Mangum (W-NC) | November 25, 1840 |
| 23 | Isaac Chapman Bates (W-MA) | January 13, 1841 |
| 24 | Rufus Choate (W-MA) | February 23, 1841 |
| 25 | Levi Woodbury (D-NH) | March 4, 1841 | Former senator (5 years) |
| 26 | John M. Berrien (W-GA) | March 4, 1841 | Former senator (4 years) |
| 27 | William Segar Archer (W-VA) | March 4, 1841 | Former representative (15 years) |
| 28 | George Evans (W-ME) | March 4, 1841 | Former representative (11 years) |
| 29 | William Woodbridge (W-MI) | March 4, 1841 | Former delegate (1 year) |
| 30 | James Turner Morehead (W-KY) | March 4, 1841 | Former governor |
| 31 | Jacob Welsh Miller (W-NJ) | March 4, 1841 | New Jersey 14th in population (1830) |
| 32 | Alexander Barrow (W-LA) | March 4, 1841 | Louisiana 19th in population (1830) |
| 33 | Samuel McRoberts (D-IL) | March 4, 1841 | Illinois 20th in population (1830) |
| 34 | James F. Simmons (W-RI) | March 4, 1841 | Rhode Island 23rd in population (1830) |
| 35 | Arthur Pendleton Bagby (D-AL) | November 24, 1841 |
| 36 | William Sprague III (W-RI) | February 18, 1842 |
| 37 | John Jordan Crittenden (W-KY) | March 31, 1842 |
| 38 | William Lewis Dayton (W-NJ) | July 2, 1842 |
| 39 | George McDuffie (D-SC) | December 23, 1842 |
| 40 | John Milton Niles (D-CT) | March 4, 1843 | Former senator |
| 41 | James Alfred Pearce (W-MD) | March 4, 1843 | Former representative (6 years); Maryland 15th in population (1840) |
| 42 | Charles Gordon Atherton (D-NH) | March 4, 1843 | Former representative (6 years); New Hampshire 22nd in population (1840) |
| 43 | Edward Allen Hannegan (D-IN) | March 4, 1843 | Former representative (4 years) |
| 44 | Walter Terry Colquitt (D-GA) | March 4, 1843 | Former representative (1 year) |
| 45 | William Henry Haywood, Jr. (D-NC) | March 4, 1843 | North Carolina 7th in population (1840) |
| 46 | Daniel Elliott Huger (D-SC) | March 4, 1843 | South Carolina 11th in population (1840) |
| 47 | Sidney Breese (D-IL) | March 4, 1843 | Illinois 14th in population (1840) |
| 48 | William Upham (W-VT) | March 4, 1843 | Vermont 21st in population (1840) |
| | David Rice Atchison (D-MO) | October 14, 1843 |
| 49 | Ephraim Hubbard Foster (W-TN) | October 17, 1843 | Former senator |
| 50 | Spencer Jarnagin (W-TN) | October 17, 1843 |
| 51 | John Fairfield (D-ME) | December 4, 1843 | Maine 13th in population (1840) |
| | James Semple (D-IL) | December 4, 1843 | Illinois 14th in population (1840) |
| | John Brown Francis (LO-RI) | January 25, 1844 |
| 52 | Henry Johnson (W-LA) | February 12, 1844 |
| | Dixon Hall Lewis (D-AL) | April 22, 1844 |
| | Chester Ashley (D-AR) | November 8, 1844 |
| | Henry A. Foster (D-NY) | November 30, 1844 | Former representative |
| | Daniel Stevens Dickinson (D-NY) | November 30, 1844 |
| | John Adams Dix (D-NY) | January 27, 1845 |