San Antonio–Austin metroplex
San Antonio–Austin metroplex | |
|---|---|
Counties in the Greater Austin area are highlighted in blue, while those in the Greater San Antonio area are marked in red. | |
| Seat | Austin and San Antonio |
| Area | |
• Total | 30,210 km2 (11,660 sq mi) |
| Population (2024) | |
• Total | 5,313,643 million (approximate) |
| GDP | |
| • Total | $430.249 billion (2023) |
| Time zone | Central Time |
The Austin-San Antonio metroplex is an emerged metropolitan area in the US state of Texas, where the dominant core cities are San Antonio and Austin. This combined metropolitan region, composed of the Greater Austin and Greater San Antonio areas, has approximately 5 million people. Downtown San Antonio and Downtown Austin are about 80 mi (130 km) apart and connected through Interstate 35 (I-35). Several cities and towns that also make the San Antonio–Austin metroplex are located along or near I-35 and the Texas State Highway 130 (SH 130).
The Greater Austin region comprises five counties: Bastrop, Caldwell, Hays, Travis, and Williamson, collectively hosting a population exceeding 2.5 million people. Conversely, Greater San Antonio encompasses eight counties: Atascosa, Bandera, Bexar, Comal, Guadalupe, Kendall, Medina, and Wilson, collectively hosting a population exceeding 2.7 million people. Discussions regarding connectivity between San Antonio and Austin have been ongoing since 1984 when the Greater Austin-San Antonio Corridor Council was established to promote economic and political unity between the two cities. Census projections estimate that San Antonio–Austin metroplex will experience rapid population growth in the upcoming decades and is positioned to become one of the main metropolitan areas in the entire US by the year 2100.