This is a list of current U.S. senators sorted by age. The United States Constitution requires Senators to be at least 30 years of age. Age does not determine seniority in the Senate. Currently, there are eight senators who are in their 80s, 17 are in their 70s, 38 are in their 60s, 23 are in their 50s, 13 are in their 40s, and 1 is in his 30s. * The median age of currently serving senators is 63 years, 137 days. * The median age of taking office for currently serving senators is 51 years, 75 days. * The median length of their Senate terms to date is 8 years, 36 days.