Texas State University (TXST) is a public research university with its main campus in San Marcos, Texas, United States, with additional campuses in Round Rock, Texas, and Querétaro, Mexico. Established in 1899, the university has grown to be the seventh-largest university in Texas. Texas State University reached a record enrollment of 44,596 students for the 2025 fall semester, continuing a trend of enrollment growth over several years.