- Two-thirds of U.S. Senators are over the age of 60, with Democrats averaging 63.7 years old.
- Senator Jon Ossoff (38) is the youngest Democrat, while Richard Durbin (80) is the oldest.
The U.S. Senate is one of the oldest legislative bodies in the world, with a majority of lawmakers well into their 60s and 70s. In 2025, the chamber remains dominated by Baby Boomers, though a handful of younger senators represent a generational shift.
This infographic breaks down the ages of Democratic senators. The data for this visualization comes from the Biographical Directory of the United States Congress.
A Senate Dominated by Boomers
Baby Boomers remain the backbone of the Democratic caucus. Nearly two-thirds of Democratic senators fall within this generation, many now in their 60s and 70s.
Senate Majority Leader Chuck Schumer (74), Elizabeth Warren (76), and Ed Markey (79) are just a few examples of the party’s senior leadership.
| Senator’s Name | State | Class | Age | Generation |
|---|---|---|---|---|
| Ossoff, Jon | Georgia | II | 38 | Millennial |
| Kim, Andy | New Jersey | I | 43 | Millennial |
| Gallego, Ruben | Arizona | I | 45 | Gen X |
| Slotkin, Elissa | Michigan | I | 49 | Gen X |
| Padilla, Alex | California | III | 52 | Gen X |
| Murphy, Christopher | Connecticut | I | 52 | Gen X |
| Schatz, Brian | Hawaii | III | 52 | Gen X |
| Heinrich, Martin | New Mexico | I | 53 | Gen X |
| Luján, Ben Ray | New Mexico | II | 53 | Gen X |
| Alsobrooks, Angela D. | Maryland | I | 54 | Gen X |
| Warnock, Raphael G. | Georgia | III | 56 | Gen X |
| Booker, Cory A. | New Jersey | II | 56 | Gen X |
| Fetterman, John | Pennsylvania | III | 56 | Gen X |
| Duckworth, Tammy | Illinois | III | 57 | Gen X |
| Gillibrand, Kirsten E. | New York | I | 58 | Gen X |
| Bennet, Michael F. | Colorado | III | 60 | Gen X |
| Kelly, Mark | Arizona | III | 61 | Baby Boomer |
| Durbin, Richard J. | Illinois | II | 80 | Silent Generation |
While the average Democratic senator is 63.7 years old, younger lawmakers make up a small minority. Only two senators, or 4.4%, are Millennials: Jon Ossoff (38) of Georgia and Andy Kim (43) of New Jersey. Both are relative newcomers, with Ossoff making history as Georgia’s first millennial senator and Kim as New Jersey’s first Asian American senator.
Gen X in the Middle
Generation X makes up about 31% of Senate Democrats, sitting squarely between Boomers and Millennials. This cohort includes Elissa Slotkin (49, Michigan), the state’s first female senator and a former CIA analyst and Pentagon official, along with Tammy Duckworth (57, Illinois), an Iraq War veteran and advocate for veterans’ affairs.
Class Divides and Election Cycles
Senators are grouped into three classes that determine when they face re-election.
Class I → Last elected 2024 — Next election: 2030
Class II → Last elected 2020 — Next election: 2026
Class III → Last elected 2022 — Next election: 2028
Many younger Democrats—such as Andy Kim and Elissa Slotkin—are in Class I, with their first full terms stretching into 2030. Meanwhile, veteran lawmakers in Class II, including Richard Durbin (80), face voters in 2026.
Credit: Visual Capitalist
