Sorry, boomers: Millennials and younger are now the majority in the U.S.

Buck Newsome, a baby boomer, and his son, Chris, a millennial
Buck Newsome, left, a baby boomer, and his son, Chris Newsome, of the millennial generation, have lunch in Newtown, Ohio, in June.
(Dan Sewell / Associated Press)

Sorry, boomers: Millennials and their younger siblings and children now make up a majority of the U.S. population.

A new analysis by the Brookings Institution shows that 50.7% of U.S. residents were under 40 as of July 2019.

The think tank’s analysis of population estimates released this summer by the U.S. Census Bureau shows that the combined millennial, Generation Z and younger cohorts numbered 166 million people. The combined Generation X, baby boomer and older cohorts represented 162 million U.S. residents.


“To many Americans — especially baby boomers themselves — this news may come as a shock. For them, the term ‘millennial’ has been associated with a youthful, often negative, vibe in terms of habits, ideology, and politics,” William Frey, a senior fellow at Brookings’ Metropolitan Policy Program, wrote in the analysis. “Now, the oldest millennial is 39, and with their numbers exceeding those of baby boomers, the millennial generation is poised to take over influential roles in business and government.”

Those under age 40 are more diverse than the older cohorts, with almost half identifying as being nonwhite.

Past surveys show that the younger generations split from older generations on issues such as immigration reform, criminal justice reform and environmental protection, and the COVID-19 pandemic and recent racial justice protests will probably galvanize the younger groups to promote an array of progressive causes, Frey wrote.

When it comes to predicting future real estate prices, the crystal ball is cloudy.

Jan. 5, 2020

Millennials typically are defined as being born between 1981 and 1996. Baby boomers, long considered a primary driver of demographic and social change in the U.S. because of their large numbers, were born between the end of World War II and the arrival of the Beatles in the U.S. in 1964.

Squeezed between the boomers and millennials, Generation Xers were born in the late 1960s and 1970s. Members of Generation Z were born after 1996.