Population held steady in midsize American cities, the Census Bureau said. File Photo by UPI

May 14 (UPI) -- Population numbers remained about the same in most U.S. midsize cities, the Census Bureau said Thursday.

While the national population grew slowly, the population in major cities dropped, a new report from the Census Bureau said.

The Bureau defines midsize cities as those with populations of 25,000 to 70,000. An example is Fort Mill, S.C., which was the fastest-growing city in the Charlotte, N.C., metro area. Its population increased by 6.8%, to 38,673. Its growth was faster than that of Charlotte, the United States' 14th-largest city.

The new report shows population from July 1, 2024, to July 1, 2025. Tighter immigration policies slowed immigration during that time, and birthrates slowed to a record low.