The area code 737 is located in Austin, Texas.
Area code 737 serves Austin, Texas and much of Central Texas as an overlay to long-standing area code 512. Introduced in 2013, it supports the fast-growing metro anchored by the Texas state capital and its tech scene, often called “Silicon Hills.” The 737/512 overlay spans Travis County and nearby areas, keeping local connections across the region. Austin operates on Central Time (CT), and the area includes both urban neighborhoods and Hill Country gateways.
Statistic: 737 was introduced in 2013 as an overlay to 512, which dates to 1947 — North American Numbering Plan Administration (NANPA)
Major cities and communities covered by 737/512 include:
The 737 area code reaches key landmarks like the Texas State Capitol, The University of Texas at Austin, Lady Bird Lake, Barton Springs, the LBJ Presidential Library, and Circuit of The Americas. It also covers festival hotspots for SXSW, live music venues, and trails along the Colorado River as it runs through downtown. This mix of government, education, tech, and culture makes the 737/512 region one of the most active calling areas in Texas.
With the overlay, 10-digit dialing is required for local calls, and existing 512 numbers stayed the same when 737 launched. New phone numbers in the area are often issued with 737, helping meet demand from new residents, startups, and mobile devices. The overlay approach means both 737 and 512 serve the same footprint across Travis, Williamson, Hays, Caldwell, and Bastrop counties. If you see a 737 number, it’s a local Central Texas phone number tied to the greater Austin area.