Area code 603 was introduced in 1947 and serves Statewide New Hampshire, covering cities like Manchester, Nashua, Concord. It sits in the Eastern (ET) zone and reaches a population of roughly 1.4M+.
With MeraTalk, you can get a 603 number for New Hampshire in minutes and run all your calls over the internet from any device.
A 603 number gives your business a genuine local footing in New Hampshire, and the benefits go well beyond a familiar caller ID.
Outbound reps dial Statewide New Hampshire prospects from a number those prospects recognize. A familiar 603 caller ID gets the conversation started instead of going to voicemail.
Give your Statewide New Hampshire customers a local number to call for help. Calls route to your support team wherever they sit, with queues, schedules, and an AI receptionist after hours.
Your team doesn't need to live in New Hampshire to answer a 603 number. Calls ring on laptops and mobiles anywhere, while customers see a hometown business.
Pair your 603 number with local numbers in other markets you serve. Each location keeps its own identity while every call lands in one shared MeraTalk workspace.
Area codes are added as a region's demand for phone numbers grows. Here's when each New Hampshire code came online — and where 603 fits in.
603 was the first of New Hampshire's codes, assigned to Statewide New Hampshire and anchored by Manchester. It remains the code most residents associate with Manchester and Nashua.
Make and receive calls and texts from your 603 number on desktop, mobile, or desk phone. One number for everything — no app-switching, no confusion.
Answers, screens, and routes every call to your 603 number around the clock — even when your team is offline or busy.
Every call and text to your 603 number is visible to the whole team — anyone can pick up, reply, or follow up.
Missed calls become readable transcripts delivered to your inbox.
Route Statewide New Hampshire callers to the right person on your schedule.
Already have a 603 number? Bring it — porting is on every plan.
Area code 603 is part of the North American Numbering Plan (NANP) — the system that assigns three-digit codes to geographic regions across the US, Canada, and parts of the Caribbean. Code 603 was assigned to Statewide New Hampshire and serves Manchester and Nashua as its primary markets.
When a call is made to a 603 number, the carrier routes it through the Eastern (ET) time zone switching network. This also means that when customers see a 603 number on their caller ID, they immediately associate it with Statewide New Hampshire — before the call is even answered.
The area code on your caller ID shapes how customers in Statewide New Hampshire decide whether to pick up or ignore your call.
Calls from a local 603 number are far more likely to be answered than calls from an out-of-state or toll-free number. Customers in Statewide New Hampshire recognise the code and trust it as local.
A 603 number tells prospects in New Hampshire that you operate in their market — even if your team is fully remote or based elsewhere. First impressions happen before the first word.
With a cloud-hosted 603 number, your team can answer calls from any device, in any location. The local area code stays consistent while your team stays flexible.
Northeast listed first
Explore other Northeast area codes and find the right local number for every market you serve.
Set up your 603 number on MeraTalk, compare other US area codes, or read the public record for Statewide New Hampshire.
Run your 603 number on a full business phone system — calls, SMS, routing and an AI receptionist included.
On MeraTalkBrowse every US area code by state and find the right local number for the markets you serve.
External referenceSee the FCC's area code relief regulation (47 CFR §52.19) governing how area code 603 and every US area code is administered.
Same product, same support, same compliance on every plan. The AI receptionist is included from day one.
