Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Mathis is a city in San Patricio County, Texas, United States. The population was 5,034 at the 2000 census. In 1887 when the San Antonio and Aransas Pass Railroad was laying tracks across San Patricio County, Thomas H. Mathis got naming rights when he donated 300 acres for a townsite and school. Mathis could well afford 300 acres since he and his brother J. M. Mathis, held 37,000 acres in the vicinity. The brothers had dropped out of the Coleman, Mathis, Fulton Cattle Company in 1879. Thomas Mathis owned an additional 60,000 acres around Mathis and built a fence enclosing the town.