Get a 603 Area Code Number for Your Local Business in New Hampshire
November 28, 2025

Secure a 603 Area Code Number for Your Local Business in New Hampshire

Share this post
Explore AI Summary

The 603 area code covers the entirety of New Hampshire, making it an essential choice for businesses seeking a credible local presence in the region's key high technology, advanced manufacturing, defense, healthcare, tourism, and education centers.

Getting a 603 number helps companies build trust, improve call response rates, and connect more effectively with customers across the diverse communities of the state, including major cities like Manchester, Nashua, Concord (the state capital), and Portsmouth.

What is 603 Area Code?

The 603 area code is a telephone area code in the North American Numbering Plan (NANP) serving the entire state of New Hampshire. It is the sole area code for the state. It covers major cities and communities, including the state capital Concord, as well as Manchester, Nashua, and Portsmouth.

The 603 area code was one of the original 86 area codes created in 1947, and it has historically covered the entire state of New Hampshire. It remains one of the few states that does not currently require an overlay area code.

  • State: New Hampshire
  • Major Cities/Areas: Concord, Manchester, Nashua, Portsmouth
  • Time Zone: Eastern Time Zone (ET)
  • Established: 1947
  • Overlay Area Code: None
  • Primary Uses: Residential lines, neighborhood businesses, major academic institutions, healthcare facilities, and local mobile numbers.

Population & Demographics of 603 Area Code

The 603 area code is unique, as it serves the entire state of New Hampshire and operates without an overlay. This vast area, encompassing the state capital, Concord, and the largest city, Manchester, is part of New England.

The State of New Hampshire has an estimated population of 1,415,860 and is currently experiencing an annual population growth of approximately 0.48%.

The local economy is robust and diversified, with key industries revolving around Advanced Manufacturing, High Technology, Healthcare, Education, and Tourism. Economically, the region is characterized by an average per capita income of about $58,184 and a high median household income of approximately $95,628. New Hampshire has one of the lowest poverty rates in the country, standing at 7.16% statewide.

Demographically, the 603 area (New Hampshire figures) is relatively homogeneous but is growing in diversity: the population includes approximately 88.93% White residents, 2.58% Asian residents, and 1.52% Black or African American residents. Other significant groups include those identifying as Two or More Races (5.52%).

603 Area Code Time Zone

The 603 area code serves the entire state of New Hampshire. It is the sole area code for the state and covers major population centers like the largest city, Manchester; the state capital, Concord; and other significant cities such as Nashua and Portsmouth. It is located entirely within the Eastern Time Zone (ET).

Business Importance of 603 Area Code

The 603 area code adds local trust and credibility, making it valuable for local businesses. Here’s how a business number with the 603 area code is important for your business:

Why Local Numbers Build Trust

When customers see a local 603 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 603 number shows commitment to serving the community. For larger enterprises, it signals accessibility and helps build stronger relationships with regional customers.

Enterprise Businesses That Benefit From a Local 603 Number

Some well-known enterprises that would benefit from a local 603 number include:

Technology & Advanced Manufacturing 

New Hampshire has a high concentration of high-tech firms, especially in the southern part of the state, making localized support critical.

  • BAE Systems Inc.: Major defense contractor with a significant presence in Nashua and Hudson, focusing on electronic warfare and advanced technology.
  • DEKA Research & Development Corporation: Headquarters for inventor Dean Kamen's R&D firm, Manchester.
  • DELL Technologies: Operates key corporate and technical facilities in the southern New Hampshire corridor, Nashua.
  • Autodesk: Software and services company with a notable office in the Manchester area.

Healthcare & Education 

The 603 area is home to major regional healthcare systems and influential universities that anchor local employment.

  • Dartmouth Health (Dartmouth-Hitchcock): The largest private employer in the state, with its medical center and associated systems based in Lebanon.
  • Elliot Health System: A large healthcare provider serving the Manchester area and surrounding communities.
  • Southern New Hampshire University (SNHU): One of the largest and fastest-growing universities, headquartered in Manchester.
  • Dartmouth College: An Ivy League institution based in Hanover, anchoring the Upper Valley economy.

Finance & Insurance 

Local numbers help financial institutions serve both the residential and commercial banking needs of the affluent New England market.

  • Fidelity Investments: Operates large corporate offices and back-office functions in Merrimack.
  • Lincoln Financial Group: Maintains a major corporate presence and regional offices in Concord.
  • Service Credit Union: A major credit union with an extensive branch network across the state, originating in the Portsmouth area.
  • People's United Bank/M&T Bank: Maintain strong retail banking footprints across 603 major cities like Manchester and Nashua.

Tourism & Recreation 

The state's tourist destinations rely on local numbers for reservations, hospitality services, and seasonal operations.

  • Mount Washington Cog Railway: A popular tourist attraction in the White Mountains.
  • Cannon Mountain Ski Area: A state-owned major ski resort in the Franconia Notch area.
  • The Omni Mount Washington Resort: A historic, high-profile hotel and resort in the Bretton Woods area.
  • New Hampshire Motor Speedway: A major NASCAR venue in Loudon.

How to Get a 603 Area Code Number?

Setting up your 603 area code number with Goodcall is quick and straightforward. Here’s how it works:

  1. Sign Up: Create your account with Goodcall using basic business details.
  2. Select Your Plan: Choose the pricing plan that best matches your company’s needs.
  3. Complete KYC: Verify your identity and business information for compliance.
  4. Pick a Number: Browse the available 603 numbers and select the one you want.
  5. Customize Agent: Set up your AI-powered answering agent with greetings, call routing, and voicemail preferences.
  6. Go Live: Activate your number and start receiving calls immediately.

Benefits of Using Goodcall for 603 Area Code

Choosing Goodcall means more than just getting a local number; it means equipping your business with tools to handle calls efficiently.

  • 24/7 Availability: Ensure no customer call is missed.
  • AI Answering Services: Professional, automated responses for smoother communication.
  • Cost-Effective: Flexible pricing designed for small to enterprise-level businesses.
  • Scalable Solutions: Upgrade features as your business grows.
  • Local Credibility: Build customer trust with a recognizable area code.

With these advantages, Goodcall makes it easier for you to manage calls and focus on growing your business.

Pricing Plans for Local Numbers

Our local 603 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.

Nearby Area Codes to 603

Areas Area Code
Lowell, Lawrence, Haverhill, Peabody 351, 978
Springfield, Holyoke, Pittsfield, Northampton, Amherst 413
Burlington, South Burlington, Rutland, and Montpelier 802

FAQs

What is the 603 area code, and where is it located?

The 603 area code is for the entire state of New Hampshire. It serves all ten of the state's counties, including major cities like Manchester, Nashua, Concord, and Portsmouth. 

What cities does the 603 area code cover?

The 603 area code serves the entire state of New Hampshire, including cities like Manchester, Nashua, Concord, Portsmouth, and Dover.

What time zone is area code 603 in?

The 603 area code is located in the Eastern Time Zone. 

Does the 603 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 603 number?

Local service providers, tech companies, restaurants, real estate agents, and startups benefit from a 603 number, as it boosts local trust and visibility.

How can I get a local 603 area code number for my business?

You can get a 603 number easily by signing up with Goodcall, choosing your plan, and selecting your preferred local number.

Can I forward calls from my 603 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 603 area code number?

Goodcall plans are affordable and flexible, at $66 per month per agent annually.

Is the 603 area code toll-free?

No, 603 is not a toll-free area code. It’s a geographic code for New Hampshire, 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.

Last updated:
November 28, 2025

Why A Local AI Phone Number

A local AI phone number links your AI agent to real-world calls.

📞 Your agent answers calls 24-7 / 365 and is never busy
📈 Understand your callers with detailed analysis
🎙 Capture the detail in every call, they're all recorded
🌐 Forward calls or connect to Google Voice
✋🏻 Places callers on hold when your line is busy
🚫 Say goodbye to spam calls

An AI Phone Service With Smart AI Agents


Use skills to teach your agent how to respond to common caller questions.

🎓 Teach your agent anything with your own custom skills
✅ Off the shelf skill templates ready to go in a few clicks
🚀 Combine skills to create deeper customer engagement
👋🏼 Optimize customer experience with custom greetings
💰 Grow revenue by texting your website (ie: bookings & shop)

AI Agent which is automatically answering the phone to serve your customers.