List of members of the United States Congress by longevity of service
Senate time
Columns: Total tenure rank | Uninterrupted rank | Name | State represented | Dates of service | Total tenure time | Uninterrupted time
1 | 1 | Robert Byrd | West Virginia | January 3, 1959 – June 28, 2010 | 51 years, 176 days | 51 years, 176 days | 2 | 2 | Daniel Inouye | Hawaii | January 3, 1963 – December 17, 2012 | 49 years, 349 days | 49 years, 349 days | 4 | 3 | Ted Kennedy | Massachusetts | November 7, 1962 – August 25, 2009 | 46 years, 292 days | 46 years, 292 days | 5 | 5 | Carl Hayden | Arizona | March 4, 1927 – January 3, 1969 | 41 years, 305 days | 41 years, 305 days | 6 | 6 | John C. Stennis | Mississippi | November 7, 1947 – January 3, 1989 | 41 years, 59 days | 41 years, 59 days | 7 | 7 | Ted Stevens | Alaska | December 24, 1968 – January 3, 2009 | 40 years, 10 days | 40 years, 10 days | 8 | 8 | Patrick Leahy | Vermont | Since January 3, 1975 | 39years, 29days | 39years, 29days | 9 | 9 | Ernest Hollings | South Carolina | November 8, 1966 – January 3, 2005 | 38 years, 55 days | 38 years, 55 days | 10 | 10 | Richard Russell, Jr. | Georgia | January 12, 1933 – January 21, 1971 | 38 years, 9 days | 38 years, 9 days | 11 | 11 | Russell B. Long | Louisiana | December 31, 1948 – January 3, 1987 | 38 years, 3 days | 38 years, 3 days | 13 | 12 | Orrin Hatch | Utah | Since January 3, 1977 | 37years, 29days | 37years, 29days | 15 | 13 | Warren Magnuson | Washington | December 18, 1944 – January 3, 1981 | 36 years, 20 days | 36 years, 20 days | 16 | 14 | Joe Biden | Delaware | January 3, 1973 – January 15, 2009 | 36 years, 12 days | 36 years, 12 days | 17 | 15 | Claiborne Pell | Rhode Island | January 3, 1961 – January 3, 1997 | 36 years, 0 days | 36 years, 0 days | 18 | 16 | Pete Domenici | New Mexico | January 3, 1973 – January 3, 2009 | 36 years, 0 days | 36 years, 0 days