National News

Longest Serving US Senators Fast Facts

Posted August 28, 2013

Here's a look at the top 25 longest-serving senators in United States history.

The Top Twenty-Five as of 2/9/2017: Names in bold are currently serving in the US Senate.

1) Robert C. Byrd (D-WV), 51 years, 5 months, 26 daysJanuary 3, 1959-June 28, 2010

2) Daniel K. Inouye (D-HI), 49 years, 11 months, 14 daysJanuary 3, 1963-December 17, 2012

3) Strom Thurmond (R-SC), 47 years, 5 months, 8 daysDecember 14, 1954-April 4, 1956 and November 7, 1956-January 3, 2003

4) Edward M. Kennedy (D-MA), 46 years, 9 months, 19 daysNovember 7, 1962-his death on August 25, 2009

5) Patrick Leahy (D-VT), 42 years, 4 months January 3, 1975-present

6) Carl T. Hayden (D-AZ), 41 years, 9 months, 30 daysMarch 4, 1927-January 2, 1969

7) John C. Stennis (D-MS), 41 years, 1 month, 29 daysNovember 5, 1947-January 2, 1989

8) Orrin Hatch (R-UT), 40 years, 4 monthsJanuary 3, 1977-present

9) Theodore F. Stevens (R-AK), 40 years, 10 daysDecember 24, 1968-January 3, 2009

10) Thad Cochran (R-MS), 38 years, 4 months, 6 days December 27, 1978-present

11) Ernest F. Hollings (D-SC), 38 years, 1 month, 25 daysNovember 9, 1966-January 3, 2005

12) Richard B. Russell (D-GA), 38 years, 10 daysJanuary 12, 1933-January 21, 1971

13) Russell Long (D-LA), 38 years, 3 daysDecember 31, 1948-January 2, 1987

14) Francis E. Warren (R-WY), 37 years, 4 daysNovember 18, 1890 to March 3, 1893March 4, 1895-November 24, 1929

15) Charles E. Grassley (R-IA), 36 years, 4 monthsJanuary 3, 1981-present

16) James O. Eastland (D-MS), 36 years, 2 months, 24 days June 30, 1941-September 28, 1941 and January 3, 1943-December 27, 1978

17) Warren Magnuson (D-WA), 36 years, 20 daysDecember 14, 1944-January 2, 1981

18) Joe Biden (D-DE), 36 years, 13 days January 3, 1973-January 20, 2009

19) Pete V. Domenici (R-NM), 36 years January 3, 1973-January 3, 2009

19) Carl Levin (D-MI), 36 yearsJanuary 3, 1979-January 3, 2015

19) Richard Lugar (R-IN), 36 years January 3, 1977-January 3, 2013

19) Claiborne Pell (D-RI), 36 years January 3, 1961-January 3, 1997

23) Kenneth McKellar (D-TN), 35 years, 10 months March 4, 1917-January 2, 1953

24) Milton R. Young (R-ND), 35 years, 9 months, 22 daysMarch 12, 1945-January 3, 1981

25) Ellison D. Smith (D-SC), 35 years, 8 months, 13 daysMarch 4, 1909-November 17, 1944

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