the Weir family retained land in the area until well into the 20th century. 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 1880; 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, hotel, and a school had opened. The common school district serving Manchaca, had three grade schools noted on a 1932 Travis County Engineering Department map housed at the Perry–Castañeda Library at the University of Texas; one for White students located on what is today the northeast corner of FM 1626 and Manchaca Road, one grade school for African American students located at what is today 753 FM 1626, and one grade school for Mexican American students located just off Polk Road near the railroad tracks. These schools became the focus of the community. The district joined forces with the Oak Hill district to form a new high school district in 1961. AISD annexed the entire high school district in 1967. By January 1903, Manchaca's population reached 100 and was home to four businesses: The Blackwell General Store, A. G. Matthews as Blacksmith, R. E. Summerrow General Store, and the Summerrow & Carpenter Cotton Gin. The community had 200 people by the 1960s. In the 1970s the number of residents decreased to 36. Local development increased by the mid-1980s, and accelerated through the early 2000s. Climate The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Manchaca has a humid subtropical climate, abbreviated "Cfa" on climate maps. References External links Manchaca Volunteer Fire Department communities in Travis County, Texas] Unincorporated communities in Texas Census-designated places in Greater Austin