Receive a local area code
423
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Economic Overview
The 423 area code region has a diverse economy anchored by manufacturing, healthcare, education, and transportation industries. Major employers include Eastman Chemical Company in Kingsport, Ballad Health in Johnson City, and the Tennessee Valley Authority in Chattanooga. The area also benefits from tourism, particularly in the Great Smoky Mountains and Appalachian regions.
Geographical Overview
Area code 423 covers much of northeastern Tennessee, including the Tri-Cities of Kingsport, Johnson City, and Bristol, as well as Chattanooga and surrounding communities. It spans several counties such as Sullivan, Washington, Hamilton, Bradley, Carter, and Greene. The region includes both urban centers and rural Appalachian areas.
Location Info
Area code 423’s boundaries stretch from the Virginia border in the north (including Bristol) down through Johnson City and Kingsport, and west to include Chattanooga and the Tennessee side of Lookout Mountain. The region is separated from the rest of Tennessee by area codes 865 (Knoxville area) and 931 (Middle Tennessee), forming two non-contiguous sections connected by a narrow corridor.
Population Demographics
The population in the 423 area code is predominantly White, with growing African American and Hispanic communities, especially in urban centers. The region is a mix of college towns, family neighborhoods, and rural communities, with a median age slightly above the national average due to a substantial retiree population. Education and income levels vary, with higher concentrations of college-educated residents in the Tri-Cities and Chattanooga.
Time Zone Info
Area code 423 is located in both the Eastern Time Zone (ET) and, in its southern portion around Chattanooga, the Central Time Zone (CT).
Other Area Code Details
Area code 423 was created in 1995 when it split from area code 615, and it is unique for being divided into two separate geographic sections due to the creation of area code 865. The region is home to iconic attractions like the Bristol Motor Speedway, Chattanooga’s Tennessee Aquarium, and the Appalachian Trail.
