Population data from the Census Bureau's Population Estimates Program reveals which cities are booming — and which are quietly losing residents despite headlines to the contrary.
The 2020s have reshuffled the American population map more dramatically than any decade since the post-World War II suburban boom. Remote work, rising coastal costs, pandemic-driven migration, and climate-related moves combined to create a growth pattern that confounded many expert predictions. Census Bureau data — from both the Population Estimates Program (PEP) and the ACS — documents this transformation clearly.
The fastest-growing large cities from 2020 through the mid-2020s are overwhelmingly in the Sun Belt. Cities like Fort Worth, TX; Phoenix, AZ; Charlotte, NC; and Jacksonville, FL have added residents at rates exceeding 10% since the 2020 Decennial Census. These cities benefit from relatively affordable housing (compared to coastal peers), warm climate, and tax environments that have attracted both domestic migrants and remote workers. See the full fastest-growing cities list for rankings by absolute population gain and percentage growth.
Beyond the Sun Belt giants, several smaller cities are punching above their weight. Boise, ID; Huntsville, AL; Myrtle Beach, SC; and Sarasota, FL have seen growth rates that rival much larger metros. These secondary markets have attracted retirees, remote workers, and businesses seeking lower costs than primary metros. Browse city population rankings to find the fastest-growing places in specific states.
Population growth isn't universal. Several major legacy cities — most prominently New York City, San Francisco, and Chicago — reported population declines between 2020 and 2023. These losses reflect high costs, urban crime concerns that accelerated post-2020, and remote work enabling migration that wasn't previously possible. Some smaller industrial cities in the Midwest and Northeast continue decades-long population declines.
An important nuance: a city's population can decline while its surrounding metro grows rapidly. Many people who "left" New York City moved to Long Island, New Jersey, or Connecticut — still within the New York CBSA. The metro population rankings show a different picture than the city rankings. Phoenix's metro area has grown even faster than the city itself, incorporating suburban growth in Mesa, Gilbert, Chandler, and Scottsdale.
Job creation is the fundamental driver. Cities with strong employment in sectors that adapted to or thrived post-pandemic — technology, healthcare, logistics, construction — consistently outperform. Housing affordability acts as a multiplier: cities that could absorb in-migrants without runaway cost increases (like Indianapolis, Kansas City, and Raleigh) maintained their attractiveness longer than places where growth quickly priced out the very workers it attracted.
CensusDepth's trend pages show population changes across 2019, 2021, and 2023 ACS vintages. While these aren't as current as PEP estimates, they show demographic composition changes alongside raw population counts — whether a city's growth is being driven by natural increase, domestic in-migration, or international immigration.
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