Crockett, Texas is the county seat of, and largest community in Houston County. Houston County was established in 1837, and was the first county established under the Republic. Early settler Andrew Edwards Gossett, from Tennessee, donated the land for the county seat. The settlement was named for David Crockett, a former neighbor of the Gossetts back in Tennessee. Crockett is said to have camped near the townsite in January 1836 on his way to San Antonio. The first post office was established in 1838. During the Civil War, Crockett was as a mustering point and training center for Confederate forces. In 1865, the courthouse and most of the town burned. By 1872, the Houston and Great Northern Railroad was built through Crockett. In 1886, the first school for black girls, later known as Mary Allen Junior College, opened in Crockett. Wildcatting for oil began in the early 1900s, but local oil was not produced commercially until 1934.