CallataGuidesGet a local business phone number in New Castle, CO
New Castle's area code, prefixes and carriers from NANPA records, and how to put a New Castle number in front of your customers.
- Area code
- 970
- Exchanges
- 4NANPA-assigned
- Carriers
- 4
- Population
- 4,894Census 2024 est.
Area codes in New Castle
New Castle, in Garfield County, Colorado, had a Census-estimated population of 4,894 in July 2024. All 4 exchanges NANPA lists for its rate center are in area code 970. 970 is part of an overlay with 748, so a new local number in New Castle may carry any of those codes depending on which have numbers available. New Castle is in the Mountain time zone.
According to NANPA's dialing-plan data, local calls within 970 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 |
|---|---|---|---|---|---|
| 970 | 4 | 100% | 1995 | 748 | Mountain |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
New Castle exchanges by carrier
4 carriers hold the 4 exchanges assigned to New Castle's rate center. Onvoy, LLC - CO has the most, with 1. 4 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 - CO | 1 | 25% |
| Commio, LLC | 1 | 25% |
| Qwest Corporation | 1 | 25% |
| Ton80 Communications, LLC | 1 | 25% |
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 New Castle
These are the central office codes NANPA records for New Castle. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2014. 2 of the 4 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 970 | 536, 891, 984, 995 |
Source: NANPA utilized central office code file.
When New Castle's exchanges were assigned
The table groups New Castle's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2010s | 1 | 33% |
| 2020s | 2 | 67% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
What makes a number local to New Castle
Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. New Castle's numbers are rated to the NEW CASTLE rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a New Castle number.
Keeping an existing New Castle number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 970 when you pick it.
The local business market
New Castle is part of the Rifle, CO micropolitan area, home to 79,810 people in 2024. County Business Patterns counted 4,413 business establishments in the Rifle, CO micropolitan area in 2023, employing 38,852 people. The largest sectors by establishment count are construction (769), professional, scientific, and technical services (621), and real estate and rental and leasing (507).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Offices of real estate agents and brokers | 232 | 268 | 1.2 |
| Full-service restaurants | 154 | 3,494 | 22.7 |
| Residential property managers | 99 | 665 | 6.7 |
| Residential remodelers | 98 | 223 | 2.3 |
| Plumbing, heating and air-conditioning contractors | 97 | 580 | 6.0 |
| New single-family housing construction contractors | 96 | 444 | 4.6 |
| Electrical contractors | 93 | 563 | 6.1 |
| Landscaping services | 93 | 378 | 4.1 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
A New Castle number on Callata
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 New Castle 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.
The comparison below uses 9 users, the rounded average establishment size in the Rifle, CO micropolitan area. At list prices checked September 28, 2026, that is $224.55 a month on Ooma Office Pro and $270.00 on RingCentral RingEX Core. Callata comes to $179.00 a month for 9 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 | $179.00 | $2,148.00 |
| Quo (Starter) | $19.00 per user | $171.00 | $2,052.00 |
| Nextiva (Core) | $23.00 per user | $207.00 | $2,484.00 |
| Ooma (Office Pro) | $24.95 per user | $224.55 | $2,694.60 |
| Dialpad (Standard) | $27.00 per user | $243.00 | $2,916.00 |
| RingCentral (RingEX Core) | $30.00 per user | $270.00 | $3,240.00 |
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 New Castle, CO?
970. All exchanges NANPA lists for New Castle are in 970.
How many phone companies have exchanges in New Castle?
4, holding 4 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing New Castle 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 New Castle?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 9 users come to $179.00 a month. For comparison, 9 users on RingCentral RingEX Core list at $270.00 a month (checked September 28, 2026).