WASHINGTON — They grow everything bigger in Texas, even the cities.

Three of the nation’s five fastest-growing cities — and seven of the top 15 — are located in the Lone Star State, new data from the Census Bureau shows. The Texas cities of San Marcos, Frisco and Cedar Park were No. 1, 2 and 4 in percentage population growth between 2012 and 2013, each growing by at least 5 percent in that span.

Utah had two of the top five: South Jordan, at No. 3, and Lehi, at No. 5.

This is the second year in a row that San Marcos, centrally located between Austin and San Antonio on Interstate 35, has topped the list of fastest-growing cities with a population of more than 50,000. Its population grew by 8 percent between July 2012 and 2013 to 54,076 people.

That’s well ahead of its 2011-12 increase of 4.9 percent, which pushed San Marcos into the upper echelon of cities with 50,000-plus people.

Mayor Daniel Guerrero, in Chicago recruiting business investment for his city, said that in addition to its enviable location between Austin and San Antonio, San Marcos has one of the nation’s largest outlet malls and is home of the 35,000-student Texas State University.

The West is in the middle of a population boom, with energy production one of the fastest-growing industries in the United States. The oil- and gas-rich fields of the Great Plains and Mountain West have fueled the population increase. The majority of the fastest-growing cities are west of the Mississippi River.

No cities with more than 50,000 people dropped below that level between 2012 and 2013.