Located in Travis County, Texas, Wells Branch is a designated area for census purposes. The population count recorded during the 2020 census was 14,000 residents.

Around 1827, Waymain and Mary Emily Wells made their home in the Wells Branch vicinity. According to the Austin History Center, Wells served as a spy and scout for the Texians during conflicts in Goliad and San Antonio, as they fought for independence from Mexico.

Situated 13 miles (21 km) north of downtown Austin, Wells Branch can be found at coordinates 30°26′38″N 97°40′42″W (30.443997, -97.678469).

Based on data from the US Census Bureau, the CDP covers a land area of 2.5 square miles (6.6 km2) and a small percentage, 0.39%, is made up of water.

According to the 2020 census conducted in the United States, the CDP had a population of 14,000 individuals, with 6,270 households and 2,852 families living there.

Wells Branch is a Municipal Utility District that provides water/wastewater service to residents and also oversees parks, recreational facilities, and programs. The District is known for its strong dedication to water conservation, which includes implementing a considerable rainwater harvesting program in District Facilities and completing an irrigation well in September 2014.

The community of Wells Branch is served by three schools and Independent School Districts, specifically Pflugerville (North West Elementary) and Round Rock (Wells Branch Arts Integration Academy and Joe Lee Johnson Elementary).

In 1998, the creation of the Wells Branch Library district came about due to the enactment of a state law that permitted the establishment of library districts in areas lacking library systems. Consequently, the library receives financial support from a sales tax revenue of 1/2% generated by Wells Branch businesses. An elected board of five individuals, headed by Faye Cormier as the president, is responsible for overseeing the management and operations of the Wells Branch Community library.

Mills Pond serves as a storage facility for the water from Wells Branch creek. Originating in Wells Branch, Wells Branch creek is a smaller stream that merges with Walnut Creek[10] and flows southward, passing through the urban area of Austin, Texas, until it reaches the Colorado River where it ultimately joins.