CallataGuidesGet a local business phone number in Merrimac, MA
Merrimac's area codes, prefixes and carriers from NANPA records, and how to put a Merrimac number in front of your customers.
- Area code
- 351 / 978
- Exchanges
- 5NANPA-assigned
- Carriers
- 4
- Population
- 6,810Census 2024 est.
Area codes in Merrimac
Merrimac, in Essex County, Massachusetts, had a Census-estimated population of 6,810 in July 2024. NANPA lists 5 exchanges for its rate center across 2 area codes; 351 has the most (3, 60%). 351 is part of an overlay with 978, so a new local number in Merrimac may carry any of those codes depending on which have numbers available. Merrimac is in the Eastern time zone.
According to NANPA's dialing-plan data, local calls within 351 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
Phone carriers in Merrimac
4 carriers hold the 5 exchanges assigned to Merrimac's rate center. Onvoy, LLC - Ma has the most, with 2. 5 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Onvoy, LLC - Ma | 2 | 40% |
| Fractel, LLC | 1 | 20% |
| Verizon New England INC. | 1 | 20% |
| TC Systems, INC. | 1 | 20% |
Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.
Local prefixes for Merrimac
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Merrimac. The earliest assignment date recorded in the file for these codes is 2019. 1 of the 5 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 351 | 222, 529, 888 |
| 978 | 346, 384 |
Source: NANPA utilized central office code file.
When Merrimac's exchanges were assigned
The table groups Merrimac's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2010s | 1 | 50% |
| 2020s | 1 | 50% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
How local numbers work in Merrimac
What a caller sees as "local" is the area code plus prefix. In Merrimac, those come from the MERRIMAC rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 351 numbers available change over time; porting an existing number is free.
Who does business near Merrimac
Merrimac is part of the Boston-Cambridge-Newton, MA-NH metro area, home to 5.0 million people in 2024. County Business Patterns counted 133,807 business establishments in the Boston, MA-NH metro area in 2023, employing 2,681,704 people. The largest sectors by establishment count are professional, scientific, and technical services (17,803), retail trade (15,568), and health care and social assistance (15,127).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 4,652 | 104,689 | 22.5 |
| Limited-service restaurants | 3,920 | 51,825 | 13.2 |
| Residential remodelers | 3,263 | 11,112 | 3.4 |
| Law offices | 2,967 | 24,707 | 8.3 |
| Landscaping services | 2,876 | 12,494 | 4.3 |
| Dental offices | 2,419 | 19,313 | 8.0 |
| Plumbing, heating and air-conditioning contractors | 2,169 | 22,860 | 10.5 |
| Beauty salons | 2,025 | 10,995 | 5.4 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Merrimac business line
Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.
Porting a number you already use in Merrimac is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.
AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.
A 20-person team is the benchmark here, the rounded average establishment size in the Boston, MA-NH metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $600.00 a month and Ooma Office Pro $499.00. Callata comes to $399.00 a month for 20 users ($99 a month with 5 users included, then $20 per additional user), below both.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $399.00 | $4,788.00 |
| Quo (Starter) | $19.00 per user | $380.00 | $4,560.00 |
| Nextiva (Core) | $23.00 per user | $460.00 | $5,520.00 |
| Ooma (Office Pro) | $24.95 per user | $499.00 | $5,988.00 |
| Dialpad (Standard) | $27.00 per user | $540.00 | $6,480.00 |
| RingCentral (RingEX Core) | $30.00 per user | $600.00 | $7,200.00 |
Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.
Frequently asked questions
What area code is Merrimac, MA?
Merrimac has exchanges in 351 and 978; 351 has the most.
How many phone companies have exchanges in Merrimac?
4, holding 5 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Merrimac business number?
Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.
How much is a business phone line in Merrimac?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 20 users come to $399.00 a month. For comparison, 20 users on RingCentral RingEX Core list at $600.00 a month (checked September 28, 2026).