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The 423 area code covers a large, economically diverse region of East Tennessee, making it an essential choice for businesses seeking a credible local presence in the state’s key manufacturing, logistics, and healthcare centers.
Getting a 423 number helps companies build trust, improve call response rates, and connect more effectively with customers across the Chattanooga Metropolitan Area and the Tri-Cities region (Johnson City, Kingsport, and Bristol). It encompasses major cities like Chattanooga (the largest), Cleveland, and the academic and healthcare hubs of the Tri-Cities.
The 423 area code is a telephone area code in the North American Numbering Plan (NANP) serving a large, historically significant region of East Tennessee. It covers the eastern portion of the state that operates in the Eastern Time Zone.
The 423 area code was created in 1995 when it was split from the original 615 area code. It was Tennessee's first new area code in 47 years. The 423 area code has never been overlaid and remains the sole identifier for this large region of East Tennessee.
Hamilton County is the primary commercial and population hub for the southern part of the 423 area code. The Chattanooga metro area population is estimated to be around 437,000 in 2025. Hamilton County's total population is approximately 371,000 (2023 estimate), establishing the area as a major regional economic hub.
The economy is defined by high-value sectors such as Advanced Manufacturing (Volkswagen), Logistics (Covenant, Kenco), Healthcare (Erlanger, BCBST), and Insurance (Unum).
The median household income for Hamilton County is approximately $72,568 (2023 estimate). The area attracts young professionals, showing significant growth in the 25-34 age group. The population is characterized by strong workforce growth and diversity. The largest industries by employment are Health Care & Social Assistance, Manufacturing and Retail Trade. The county has notable populations of Black or African American (Non-Hispanic) (17.4%) and a growing Hispanic or Latino community.
The 423 area code serves a large region of East Tennessee, covering the entire area between the Cumberland Plateau and the Appalachian Mountains. It is located entirely within the Eastern Time Zone (ET).
The 423 area code adds local trust and credibility, making it valuable for local businesses. Here’s how a business number with the 423 area code is important for your business:
When customers see a local 423 area code number, they immediately recognize it as part of their community. This familiarity creates trust and reduces hesitation to answer calls. Research shows that consumers are more likely to pick up calls from numbers with local area codes compared to unfamiliar or out-of-state numbers.
For small businesses, using a local area code 423 number shows commitment to serving the community. For larger enterprises, it signals accessibility and helps build stronger relationships with regional customers.
Some well-known enterprises that would benefit from a local 423 number include:
A local area code number helps banks improve trust and call response for fraud alerts, loan processing, branch outreach, and wealth-management communication across Southeast and Northeast Tennessee.
A local area code number helps hospitals and clinics improve appointment confirmations, patient coordination, and triage communication across the broad Appalachian region it serves.
A local area code number is vital for student recruitment, alumni outreach, academic department communication, and managing admissions call centers for the region's diverse universities.
A local area code number streamlines delivery coordination, reduces missed drop-offs, and strengthens customer callback reliability across the major rail and interstate corridors (I-75, I-24, I-81) of East Tennessee.
A local area code number supports B2B sales, technical support, and supply chain management for the region's extensive automotive, snack food, and energy infrastructure base.
A local area code number builds trust for claims, policy updates, and underwriting communication, especially given the presence of major national insurance corporations.
Setting up your 423 area code number with Goodcall is quick and straightforward. Here’s how it works:
Choosing Goodcall means more than just getting a local number; it means equipping your business with tools to handle calls efficiently.
With these advantages, Goodcall makes it easier for you to manage calls and focus on growing your business.
Our local 423 area code numbers come with affordable pricing plans designed to fit every business size. We offer flexible pricing options that scale with your needs, whether you’re a startup or an established enterprise. Additionally, you can save 30% on annual subscriptions, giving your business more value at a lower cost.
What is the 423 area code, and where is it located?
The 423 area code is located in eastern Tennessee, covering two regions in the northeastern and southeastern parts of the state.
What cities does the 423 area code cover?
The 423 area code covers a large portion of eastern Tennessee, serving major cities like Chattanooga, Bristol, Johnson City, and Kingsport.
What time zone is area code 423 in?
The area code 423 is in the Eastern Time Zone (ET) of the United States.
Does the 423 area code get spam calls?
Like any area code, spam and robocalls do occur, but using a trusted business provider like Goodcall helps filter unwanted calls.
Which types of businesses benefit most from a local 423 number?
Local service providers, tech companies, restaurants, real estate agents, and startups benefit from a 423 number, as it boosts local trust and visibility.
How can I get a local 423 area code number for my business?
You can get a 423 number easily by signing up with Goodcall, choosing your plan, and selecting your preferred local number.
Can I forward calls from my 423 number elsewhere?
Yes. With Goodcall, you can forward calls to any phone, ensuring you never miss a customer inquiry.
How much does it cost to get a 423 area code number?
Goodcall plans are affordable and flexible, at $66 per month per agent annually.
Is the 423 area code toll-free?
No, 423 is not a toll-free area code. It’s a geographic code for East Tennessee, designed to give businesses a trusted local identity. Toll-free numbers in the US typically begin with prefixes such as 800, 888, 877, or 855.