List of members of the United States Congress by longevity of service House and Senate time House and Senate time

| Total_tenure_rank | Uninterrupted_rank | Name_ | Party_affiliation | Total_tenure_time | Uninterrupted_time |
|---|---|---|---|---|---|
| 36 | 32 | Kenneth McKellar (H,S) | Democratic Party | 41 years, 30 days | 41 years, 30 days |
| 37 | 33 | Thad Cochran (H,S) | Republican Party | 41years, 29days | 41years, 29days |
| 38 | 34 | Don Young (H) | Republican Party | 40years, 332days | 40years, 332days |
| 39 | 35 | William Huston Natcher (H) | Democratic Party | 40 years, 240 days | 40 years, 240 days |
| 40 | 999 | Claude Pepper (H,S,I) | Democratic Party | 40 years, 207 days | n/a |
| 41 | 36 | William P. Frye (H,S) | Republican Party | 40 years, 157 days | 40 years, 157 days |
| 42 | 37 | Ted Stevens (S) | Republican Party | 40 years, 10 days | 40 years, 10 days |
| 43 | 38 | Carl Curtis (H,S) | Republican Party | 40 years, 0 days | 40 years, 0 days |