Austin, Texas

Where Is Area Code 737?

Area code 737 serves Austin and much of Central Texas. It covers the same geographic area as area code 512 because 737 is an overlay. This region sits along the Interstate 35 corridor in and around Austin.

Area code 737 covers all or part of several counties in the Austin area, including Travis County, Williamson County, Hays County, Bastrop County, and Caldwell County. Major cities and communities in the 737 service area include Austin, Round Rock, Georgetown, San Marcos, Pflugerville, Cedar Park, Kyle, Buda, and Leander. The code also reaches nearby communities that share the 512 calling region.

Area code 737 serves a region that includes the Texas State Capitol in downtown Austin and The University of Texas at Austin. It also covers communities near the Colorado River, which runs through Austin and forms Lady Bird Lake in the city center. The area is part of the Texas Hill Country on Austin's western side.

History of Area Code 737

Area code 737 was established in 2013 as an overlay for area code 512. The Public Utility Commission of Texas approved the overlay to add more phone numbers in the fast-growing Austin area. Area code 512 is one of the original area codes created in 1947, and 737 was added when demand outpaced the available supply of 512 numbers.

Area code 737 did not split the region into a new geographic zone. It overlays the existing 512 area, which means both area codes serve the same places. Because of the overlay, 10-digit dialing became necessary for local calls in the 512 and 737 service area.

Key Facts About Area Code 737

• Area code 737 is in Texas, and Austin is the best-known city in the area.
• Area code 737 uses Central Time, which is Central Standard Time, UTC-6, and Central Daylight Time, UTC-5, during daylight saving time.
• Area code 737 is an overlay area code that covers the same region as area code 512.
• Area code 737 entered service on July 7, 2013, according to the North American Numbering Plan Administrator.
• Area code 512 was created in 1947 as one of the original North American area codes, and 737 was added later because of number growth in Central Texas.
• Area code 737 serves major population centers in the Austin region, including Austin, Round Rock, Georgetown, San Marcos, and Cedar Park.
• Area code 737 covers a region that includes The University of Texas at Austin and the Texas State Capitol.
• Area code 737 is a geographic area code, not a toll-free code, and it is used for local wireless and landline numbers in its service area.

Frequently Asked Questions

What state is area code 737 in?

Area code 737 is in Texas.

What major cities use area code 737?

Major cities that use area code 737 include Austin, Round Rock, Georgetown, San Marcos, Cedar Park, Leander, Pflugerville, Kyle, and Buda.

Is area code 737 a toll-free number?

No. Area code 737 is a geographic area code for the Austin, Texas region.