Greater Austin
The Austin–Round Rock–San Marcos metropolitan statistical area, or Greater Austin, is a five-county metropolitan area in the U.S. state of Texas, as defined by the Office of Management and Budget. The metropolitan area is situated in Central Texas on the western edge of the and on the eastern edge of the , and borders Greater San Antonio to the south. As of the 2020 U.S. census, the Austin–Round Rock–Georgetown MSA is the 28th-largest metropolitan area in the United States, with a total population of 2,352,426. The metropolitan area contains the City of Austin—the fourth-largest city in Texas and the 11th-largest city in the United States with a population of 1,028,220 people. Austin's largest suburbs are Round Rock, Cedar Park, Georgetown, San Marcos, and Pflugerville. History Prehistoric and Archaic Eras The areas in and around Austin have been the site of human habitation since at least 9,000 B.C., and possibly considerably before that. The earliest known inhabitants of the area, during the late Pleistocene (Ice Age), can be linked to the Clovis people around 9200 B.C. just west of Williamson County. But archeology dig sites show a much greater evidence of Archaic Period inhabitants has been recovered from burned rock middens and rock shelters near Round Rock along Brushy Creek, in Georgetown along the San Gabriel River, and in Austin especially near Barton Springs. The earliest known historical occupants of the area, the Tonkawas, were a flint-working, hunting people who followed the buffalo on foot and periodically set fire to the prairie to aid them in their hunts. During the 18th century they made the transition to a horse culture and used firearms to a limited extent. After they were crowded out by white settlement, the Comanches continued to raid settlements in the county until the 1860s. There also appear to have been small numbers of Kiowa, Yojuane, Tawakoni, and Mayeye Indians living in the Travis and Williamson counties at the time of the earliest Anglo settlements. The prehistory of Texas has been studied by both professional and avocational archeologists for many decades. Pre-historic campsites are found throughout the county along streams or other water sources; most are "open occupation" sites, though caves and rockshelters are often found along various rivers and streams. 19th century When Europeans first arrived in the area, the Tonkawa tribe was the most prevalent, though the Comanches and Lipan Apaches were known to travel through the area as well. Spanish explorers, including the Espinosa-Olivares-Aguirre expedition, traveled through the area for centuries though few permanent settlements were created for some time. In the mid-18th century the San Xavier missions were established along the San Gabriel River in what is now western Milam County to facilitate exploration. In 1804 the fort Puesta del Colorado was established by the Spanish in what is now Bastrop. In 1807 the San Marcos de Neve settlement (modern San Marcos) was established on the San Marcos River. Following the independence of Mexico, of which Texas was a part, the empresario Stephen F. Austin