PFLUGERVILLE, TX -- Those living in Pflugerville experiencing its growth firsthand must think it must be one of the fastest-growing cities anywhere in the city.

It is, according to new census. Georgetown -- that quaint town between Austin and San Antonio -- is the nation's fastest-growing municipality, Pflugerville is not too far behind, according to the U.S. Census Bureau reports. The whole Austin region is booming, especially Austin proper after cracking the 2 million population mark last year. For its part, Pflugerville now counts more than 50,000 residents, according to the municipal website.

Pflugerville's rate of growth was 4.5 percent, placing it in the 11th ranking among the nation's fastest-growing cities. After Georgetown, New Braunfels came in second with a 6.6 percent growth rate, the data show. Round Rock, often cited for its brisk growth, didn't make the top 15 list, but its growth wasn't too shabby either. The city expanded in population by 2.8 percent, with 3,213 new residents added between 2014 and 2015 for a total population of 115,997, according to census figures.

The tally of fastest-growing cities counted those with a minimum of 50,000 people. The numbers were tracked between July 1, 2014 to July 1, 2015. Given that criteria, here's the list of the top 15 fastest-growing cities: 1. Georgetown: 63,716 (7.8 percent)

2. New Braunfels: 70,543 (6.6 percent)

3. Ankeny, Iowa: 56,764 (6.5 percent)

4. Frisco: 154,407 (6.3 percent) 5. South Jordan, Utah: 66,648 (6 percent)