According to The Atlanta Journal-Constitution:

"The Atlanta metropolitan area has leapfrogged both Washington, D.C., and Philadelphia to become the nation’s sixth-largest metropolitan region, according to newly released population estimates from the U.S. Census Bureau.

The population in Atlanta’s 29-county region increased a little more than 1% to 6.3 million between 2022 and 2023, gaining nearly 69,000 residents. D.C. and Philly also grew, but not as fast as Atlanta."