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Get a local business phone number in Westminster, MA

Westminster's area codes, prefixes and carriers from NANPA records, and how to put a Westminster number in front of your customers.

Area code
978 / 351
Exchanges
5NANPA-assigned
Carriers
3
Population
8,509Census 2024 est.

Area codes in Westminster

Westminster town is a Census town in Worcester County, Massachusetts, with an estimated 8,509 residents in 2024. NANPA lists 5 exchanges for its rate center across 2 area codes; 978 has the most (4, 80%). 978 is part of an overlay with 351, so a new local number in Westminster may carry any of those codes depending on which have numbers available. Westminster is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 978 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Area codes with exchanges in Westminster, MA
Area codeExchanges hereShareIn service sinceOverlay withTime zone
978480%1997351Eastern
351120%2001978Eastern

Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.

Phone carriers in Westminster

3 carriers hold the 5 exchanges assigned to Westminster's rate center. Paetec Itel, LLC has the most, with 2. 5 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Westminster can come from any of these blocks; once it is yours, porting lets it move between providers.

Carriers holding exchanges in Westminster, MA
Carrier (NANPA operating company)ExchangesShare
Paetec Itel, LLC240%
Verizon New England INC.240%
Onvoy, LLC - Ma120%

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.

Exchanges (NPA-NXX) assigned in Westminster

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Westminster's rate center (WESTMINSTR). The earliest assignment date recorded in the file for these codes is 2001. 1 of the 5 were assigned in 2020 or later.

Prefixes assigned in Westminster, MA
Area codePrefixes (NXX)
351371
978571, 668, 731, 874

Source: NANPA utilized central office code file.

When Westminster's exchanges were assigned

Assignment dates show when each block of Westminster numbers was added to the local supply.

Westminster, MA: exchanges by decade assigned
Decade assignedExchangesShare
2000s150%
2020s150%

Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.

Rate centers and local calling in Westminster

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Westminster's numbers are rated to the WESTMINSTR rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Westminster number.

New local numbers are drawn from carrier inventory, so the exact 978 numbers available change over time; porting an existing number is free.

Who does business near Westminster

Westminster is part of the Worcester, MA metro area, home to 881,000 people in 2024. County Business Patterns counted 19,181 business establishments in the Worcester, MA metro area in 2023, employing 319,255 people. The largest sectors by establishment count are construction (2,610), health care and social assistance (2,418), and retail trade (2,405).

Selected industries in the Worcester, MA metro area, 2023
IndustryEstablishmentsEmployeesEmployees per establishment
Limited-service restaurants6038,60514.3
Full-service restaurants60211,21618.6
Residential remodelers5611,5522.8
Landscaping services5142,0183.9
Dental offices3512,9528.4
Electrical contractors3342,3697.1
Plumbing, heating and air-conditioning contractors3282,4337.4
Law offices3261,5284.7

Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.

Setting up a Westminster business line

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

If you already have a number in Westminster, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.

A 17-person team is the benchmark here, the rounded average establishment size in the Worcester, MA metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $510.00 a month and Ooma Office Pro $424.15. On Callata the same 17 people cost $339.00 a month, less than either per-seat plan.

Monthly list price for a 17-person team
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$339.00$4,068.00
Quo (Starter)$19.00 per user$323.00$3,876.00
Nextiva (Core)$23.00 per user$391.00$4,692.00
Ooma (Office Pro)$24.95 per user$424.15$5,089.80
Dialpad (Standard)$27.00 per user$459.00$5,508.00
RingCentral (RingEX Core)$30.00 per user$510.00$6,120.00

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 Westminster, MA?

Westminster has exchanges in 978 and 351; 978 has the most.

How many phone companies have exchanges in Westminster?

3, holding 5 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Westminster 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 Westminster?

Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 17 users come to $339.00 a month. For comparison, 17 users on RingCentral RingEX Core list at $510.00 a month (checked September 28, 2026).