Get a local business phone number in Sterling, MA
Sterling's area code, prefixes and carriers from NANPA records, and how to put a Sterling number in front of your customers.
- Area code
- 978
- Exchanges
- 5NANPA-assigned
- Carriers
- 4
- Population
- 8,310Census 2024 est.
Area codes in Sterling
Sterling, in Worcester County, Massachusetts, had a Census-estimated population of 8,310 in July 2024. All 5 exchanges NANPA lists for its rate center are in area code 978. 978 is part of an overlay with 351, so a new local number in Sterling may carry any of those codes depending on which have numbers available. Sterling 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 code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 978 | 5 | 100% | 1997 | 351 | Eastern |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in Sterling
4 carriers hold the 5 exchanges assigned to Sterling's rate center. Level 3 Communications, 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. A business number in Sterling can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Level 3 Communications, LLC - Ma | 2 | 40% |
| Verizon New England INC. | 1 | 20% |
| Comcast Ip Phone, LLC | 1 | 20% |
| Paetec Itel, LLC | 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 Sterling
These are the central office codes NANPA records for Sterling. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2001. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 978 | 286, 422, 563, 678, 843 |
Source: NANPA utilized central office code file.
How local numbers work in Sterling
What a caller sees as "local" is the area code plus prefix. In Sterling, those come from the STERLING rate center, as recorded by NANPA.
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 Sterling
Sterling 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).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 603 | 8,605 | 14.3 |
| Full-service restaurants | 602 | 11,216 | 18.6 |
| Residential remodelers | 561 | 1,552 | 2.8 |
| Landscaping services | 514 | 2,018 | 3.9 |
| Dental offices | 351 | 2,952 | 8.4 |
| Electrical contractors | 334 | 2,369 | 7.1 |
| Plumbing, heating and air-conditioning contractors | 328 | 2,433 | 7.4 |
| Law offices | 326 | 1,528 | 4.7 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Sterling business line
For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.
Porting a number you already use in Sterling 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 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. Callata comes to $339.00 a month for 17 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 | $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 Sterling, MA?
978. All exchanges NANPA lists for Sterling are in 978.
How many phone companies have exchanges in Sterling?
4, holding 5 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Sterling 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 Sterling?
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).