San Marcos is a city in the U.S. state of Texas, within the Austin–Round Rock–San Marcos metropolitan area. Its population was 44,894 in 2010.
In 1689, Spaniard Alonso de Leon led an expedition from Mexico to explore Texas and establish missions and presidios in the region. De Leon's party helped blaze the Camino Real which followed present-day Hunter Road, Hopkins Street, and Aquarena Springs Drive. De Leon's party reached the river on April 25, the feast day of St. Mark the Evangelist; the river was thus named the San Marcos.In January 1808, a small group of Mexican families settled at the Old Bastrop Highway crossing of the river, and named the settlement Villa de San Marcos de Neve. The settlers were plagued by floods and Indian raids, and the settlement was abandoned in 1812.In November 1846 the first Anglos settled in the vicinity of the San Marcos Springs. The Texas Legislature organized Hays County on March 1, 1848, and designated San Marcos as the county seat. In 1851 a town center was laid out about a mile southwest of the headwaters of the river. The town became a center for ginning and milling local agricultural products. The town's most notable founder and early settler was Gen. Edward Burleson, a hero of the Texas Revolution and former vice president of the Republic of Texas.