Fort Worth leaped over Jacksonville, Florida last year to become the 10th most populous city in the United States, according to new figures released Thursday, May 14 by the U.S. Census Bureau. It's catching up to Dallas, which is No. 9.

Fort Worth also edged out Austin, with whom it's been flip-flopping as the fourth largest city in Texas for the past few years. Austin skipped over San Jose for the 12th most populous spot in the U.S., as Texas’ capital city surpassed 1 million residents for the first time.

But Fort Worth's population (1,028,117) flew right past Austin's (1,002,632). Fort Worth added more than 19,000 new residents from mid-2024 to mid-2025, the Bureau says. It's also home to one of the fastest-growing new neighborhoods in the country.

Five Texas cities are now in the nation's top 12 most populous, with the other cities being Houston, Dallas, and San Antonio.

According to the U.S. Census Bureau, these are the top 12 largest cities in America, and their populations:

• No. 1 New York City (8,584,629)
• No. 2 Los Angeles (3,869,089)
• No. 3 Chicago (2,731,585)
• No. 4 Houston (2,397,315)
• No. 5 Phoenix (1,665,481)
• No. 6 Philadelphia (1,574,281)
• No. 7 San Antonio (1,548,422)
• No. 8 San Diego (1,406,106)
• No. 9 Dallas (1,329,491)
• No. 10 Fort Worth (1,028,117)
• No. 11 Jacksonville (1,017,689)
• No. 12 Austin (1,002,632)

Nine out of 10 of the largest population gainers in pure numbers, from mid-2024 to mid-2025, were cities in the South because of a healthy job market and its comparative affordability. The biggest numeric gainers were Charlotte, North Carolina; Fort Worth, San Antonio, and the Dallas suburb of Celina.

Seattle was the only non-Southern city to crack the top 10 in numeric population gains last year, at the No. 5 spot.

Growth in small cities
Small cities in big Texas metro areas were the fastest growing municipalities in the United States last year, and the Dallas suburb of Celina ranked No. 1 in the country, followed closely by other DFW cities.

Celina, Princeton, Melissa, and Anna — all part of the Dallas-Fort Worth metroplex — were the Nos. 1, 3, 4 and 5 fastest-growing U.S. cities with populations of 20,000 residents or more from mid-2024 to mid-2025, according to the Census population estimates.

In general, smaller communities in the South, such as these, outpaced the rest of the nation, which has experienced a population slowdown since the start of the immigration crackdown last year, according to figures released Thursday, May 14.

Fulshear, in metro Houston, was the second-fastest growing U.S. city. The five Texas cities' year-over-year growth rates ranged from almost 15% to almost 25%.

In pure numbers, Celina, with only 64,000 people, grew by more residents — 12,700 — than Seattle and Houston, cities that are 12 times and 37 times larger respectively.

Small- to medium-sized cities hit a sweet spot between the largest U.S. cities, which were most impacted by the loss of immigrants from the crackdown started last year during the second Trump administration, and anemic growth in small towns, according to Matt Erickson, a Census Bureau statistician.

What's driving population losses
The two cities with the greatest rates of population loss last year — Twentynine Palms, California, by Joshua Tree National Park and Key West at the southern tip of Florida — were in places with tight housing markets. Their losses ranged from -2.4% to -2.9%.

In Twentynine Palms, a large chunk of the housing stock has been converted into short-term rentals for tourists heading to the national park. Just under 40% of its housing is occupied by its owners, compared with the national average of 65%, according to Census Bureau figures.

Hemmed in on all sides by water, the limited housing stock in Key West, as well as some of the highest home insurance rates in the U.S., have driven up housing costs for the Conch Republic. The median price for a home in Key West was $1.3 million at the start of this year, according to the Federal Reserve Bank of St. Louis.

Other cities that had some of the biggest rates of population loss last year were hit by natural disasters.

Hurricanes Helene and Milton struck Florida’s Gulf Coast within weeks of each other in late 2024. Remnants of Helene blew through western North Carolina, leaving behind damaging tornadoes and flooding. Among the cities with the greatest rates of loss were Asheville, North Carolina, and several cities on Florida’s Gulf Coast, including Pinellas Park, Dunedin, Largo and Clearwater.

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Stephanie Allmon Merry contributed to this story.