Immigrants kept the largest urban counties in the U.S. growing last year. Core counties in the Houston, Miami and Phoenix metropolitan areas grew more than any others in the country primarily because of people moving in from outside the United States,

Population growth in U.S. metro areas outpaced previous years and is largely being fueled by international migration, the Census Bureau found. A report released Thursday by the bureau found major counties in Texas,

The largest urban counties in the United States continued to grow last year, primarily due to international migration, according to new population estimates from the US Census Bureau. Core counties in metropolitan areas such as Houston,