Complete Guide to Area Code 629: Brentwood, Tennessee - area-code -

Frequently Asked Questions

Brentwood, Tennessee, is primarily served by area code 629, which overlays the existing 615 area code. Both codes cover the same geographic region, including Nashville and surrounding areas.
Brentwood, TN, shares area codes 615 and 629 due to the region's rapid growth. The 629 overlay was implemented in 2014 to ensure enough phone numbers were available without requiring existing 615 users to change their numbers. This is a common practice in high-growth areas.
You should dial all numbers within the 615/629 area using 10 digits (area code + 7-digit number), even for local calls. This applies to both landlines and mobile phones. Mandatory 10-digit dialing was implemented in February 2015.
Area code 629 covers a large portion of Middle Tennessee, including Brentwood, Nashville (Davidson County), Murfreesboro (Rutherford County), Franklin (Williamson County), and parts of several other surrounding counties. This broad coverage ensures consistent dialing procedures across the region.
Area code 629 was introduced in 2014 as the 382nd area code in service and the seventh in Tennessee. It was implemented as an overlay to the existing 615 area code to accommodate growth and avoid disrupting existing phone numbers.
You should always use 10-digit dialing (area code + number) for all calls within the 615/629 overlay area, including local calls. This became mandatory in February 2015 to simplify routing and ensure call completion.
Area code 629, along with 615, is used in Davidson, Rutherford, Williamson counties, and portions of Sumner, Wilson, Robertson, Dickson, Cheatham, Macon, Smith, DeKalb, Cannon, and Trousdale counties.
The 615 area code originally covered a much larger area of Tennessee. It was reduced in size in 1995 and 1997 to create area codes 423 and 931, respectively, due to population growth and increased demand for phone numbers. The 629 overlay was introduced in 2014 to further address growth in the Nashville metropolitan area.
Major telecommunications carriers in the 629 area code include AT&T, Verizon, T-Mobile, and Sprint (now part of T-mobile). Numerous smaller providers and VoIP services also operate in the area, offering a range of options for phone, internet, and other telecommunications needs.
Area code 629 supports economic growth by providing an ample supply of phone numbers for new businesses and expansions. Reliable communication infrastructure is essential for business operations, and the overlay system avoids disruptions caused by number shortages. This contributes to the overall economic vitality of the region.
Area code 629, combined with Nashville's robust radio communications network, ensures reliable communication for emergency services. This is crucial for coordinating responses and communicating with the public, especially in a region susceptible to severe weather events.
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