Population growth slowed in all sizes of U.S. cities, but medium-sized cities in the South experienced the largest growth in 2025, according to new U.S. Census Bureau data released Thursday. The new data covers population changes from July 1, 2024, to July 1, 2025. Nationwide, the population growth rate slowed in 2025 due to declines in net international migration. What cities and towns grew the most?Many of the fastest-growing cities were medium-sized cities overall, the data showed. Medium-sized cities have populations between 5,000 and 49,999.Out of the 20 fastest-growing cities with populations of more than 20,000, 14 were medium-sized. None had populations over 100,000.Many of these medium-sized cities are in the outskirts of large metropolitan areas, according to the bureau. For example, the top five fastest-growing cities are in Texas — four outside of Dallas and one outside of Houston. The fastest-growing cities also reflect a trend of growth in the Southern U.S. How did the largest cities’ populations change?The rankings of the largest cities have stayed mostly the same, with some variation. For example, Fort Worth, Texas, has moved from being the 13th-largest city in 2020 to the 10th-largest in 2025. Charlotte, North Carolina, also rose in the ranks, going from the 17th-highest in 2020 to the 14th-largest city last year. The 10th-most populous city, Austin, Texas, became one of 12 cities to reach 1 million residents last year. See how your city, town or village’s population changed in 2025PHNjcmlwdCB0eXBlPSJ0ZXh0L2phdmFzY3JpcHQiPiFmdW5jdGlvbigpeyJ1c2Ugc3RyaWN0Ijt3aW5kb3cuYWRkRXZlbnRMaXN0ZW5lcigibWVzc2FnZSIsKGZ1bmN0aW9uKGUpe2lmKHZvaWQgMCE9PWUuZGF0YVsiZGF0YXdyYXBwZXItaGVpZ2h0Il0pe3ZhciB0PWRvY3VtZW50LnF1ZXJ5U2VsZWN0b3JBbGwoImlmcmFtZSIpO2Zvcih2YXIgYSBpbiBlLmRhdGFbImRhdGF3cmFwcGVyLWhlaWdodCJdKWZvcih2YXIgcj0wO3I8dC5sZW5ndGg7cisrKXtpZih0W3JdLmNvbnRlbnRXaW5kb3c9PT1lLnNvdXJjZSl0W3JdLnN0eWxlLmhlaWdodD1lLmRhdGFbImRhdGF3cmFwcGVyLWhlaWdodCJdW2FdKyJweCJ9fX0pKX0oKTs8L3NjcmlwdD4=