For the first time since the 113th Congress, which spanned from 2013 to 2015, a plurality of members of the U.S. House of Representatives is part of Generation X. Meanwhile, a plurality of members of the U.S. Senate are Baby Boomers.

At the start of the 119th Congress, the median age of U.S. senators was 64, and the median age of U.S. representatives was 57. Here's a closer look at how the ages of members of the U.S. Congress on the first day of each Congress — Jan. 3 the year after the congressional general elections — have changed since the 113th Congress.

U.S. House of Representatives

For the second Congress in a row, the median age of U.S. representatives is 57. From the 115th Congress through the 117th Congress, the median age of U.S. representatives was 58. Before that, the media age of U.S. representatives was 57 from the 113th Congress through the 114th Congress.

In the 119th Congress, the oldest U.S. representative is Hal Rogers (R-Ky.), and the youngest is Maxwell Alejandro Frost (D-Fla.). At the start of the 119th Congress, Rogers was 87, and Frost was 27.

In the 119th Congress, the largest share of the U.S. House — 150 U.S. representatives or 26.5% of the 434 U.S. representatives who were members of the chambers on Jan. 3, 2025 — were in their fifties. U.S. representatives in their fifties also made up the largest share of the chamber in the 113th Congress and 114th Congress. From the 115th Congress to the 118th Congress, U.S. representatives in their sixties made up the largest share of the chamber.

In the 119th Congress, the largest share of the U.S. House — 181 U.S. representatives or 41.7% — were part of Generation X or those born between 1965 and 1980. Baby Boomers made up the largest share of the chamber in the previous six Congresses.

U.S. Senate

From the 113th Congress through the 118th Congress, the median age of U.S. senators increased from 61 to 65. However, in the 119th Congress, the median age of U.S. senators decreased from 65 to 64.

In the 119th Congress, the oldest U.S. senator is Chuck Grassley (R-Iowa), and the youngest is Jon Ossoff (D-Ga.). At the start of the 119th Congress, Grassley was 91, and Ossoff was 37.

In all Congresses since the 113th, the largest share of U.S. senators were in their sixties. In the 119th, this was 33 U.S. senators, or one-third of the 99 U.S. senators who were members of the chamber on Jan. 3, 2025.

In the 119th Congress, the largest share of the U.S. Senate — 60 U.S. senators, or 60.6% — were Baby Boomers born between 1946 and 1964. U.S. senators who were Baby Boomers also made up the largest share of the chamber in the previous six Congresses.

Age requirements to serve in the U.S. Congress

The U.S. Constitution sets the minimum age requirements to serve in the U.S. Senate at 30 years of age and in the U.S. House at 25 years of age. However, it does not set a maximum age limit to serve in either chamber.