Charts What is the Median Age of the Residents in each U.S. State? January 4, 2017Alex 0 CommentsUnited States The median age in the Unites States is 37.8 years. The state with the youngest median age is Utah, were the average resident is 30.6 years old. Maine has the oldest residents with a median age of 44.6 years old.(Visited 40 times, 1 visits today) (No Ratings Yet)Loading...