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area code

Biggest city:





Eastern (GMT -5)

Nearby area codes: 

Zip codes



Major Cities:

Chattanooga, Johnson City, Kingsport, Bristol, Cleveland.


Average Income:





Unemployment Rate:

The 423 area code, integral to eastern Tennessee's communication network, represents more than just a series of numbers. It is a symbol of the region's distinct identity and cultural heritage. Eastern Tennessee's Communication Hub: The 423 area code serves eastern Tennessee, including key cities like Chattanooga, Kingsport, and Johnson City. This area code is crucial for connecting a diverse region that ranges from bustling urban areas to the scenic Appalachian Mountains. It facilitates not only everyday communications but also plays a pivotal role in local businesses and emergency services. A Blend of Urban and Natural Landscapes: Eastern Tennessee, covered by the 423 area code, is known for its unique combination of urban development and natural beauty. Cities like Chattanooga, nestled along the Tennessee River, are economic and cultural centers, while the surrounding areas are famed for their natural attractions, including parts of the Great Smoky Mountains National Park. Responding to Growth and Change: The 423 area code, originally covering the entire eastern half of Tennessee, was split in 1999 due to the growing demand for phone numbers. The new area code, 865, now covers Knoxville and parts of central East Tennessee, while 423 continues to serve the outer eastern regions. This split was a significant adaptation to the increasing telecommunication needs of a growing population, ensuring continued and effective connectivity across the region. The 423 area code is more than a telecommunication feature; it's a symbol of eastern Tennessee's vibrant communities, its balance of urban and natural landscapes, and its adaptability in the face of changing technological needs.
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