Manchaca is a small unincorporated community in Travis County, Texas, United States. Located 10 miles (16 km) southwest of downtown Austin, Manchaca's heart contains Menchaca Elementary school and many privately owned businesses. Youth can play PONY league baseball at the Manchaca Optimist Youth Sports Complex, with baseball and softball facilities just west of the town, near the Marbridge Ranch home for people with disabilities.
Manchaca was named after Manchaca Springs, which were named after José Antonio Menchaca, an early military and political leader in Texas. The Manchac House post office opened two miles south of the present-day location of Manchaca in 1857; the office closed the following year. A second post office, located at the present-day site of Manchaca, operated from June 1874 to May 1875. Afterwards area residents received mail in the unincorporated community of Onion Creek. The area began to grow when the International-Great Northern Railroad opened in 1881; a third post office, called Manchaca, opened. By 1884 the 75-resident community was a shipping point for cotton, grain, lumber, and posts. In the 1890s a Methodist church, a hotel, and a school opened. The community had 200 people in the 1960s. In the 1970s the number of residents decreased to 36. Local development increased in the mid-1980s. The community had 4,700 people in 1990. In 2000 the community had 2,259 people.
The main roads through Manchaca are