CallataGuidesGet a local business phone number in Chelsea, OK
Chelsea's area codes, prefixes and carriers from NANPA records, and how to put a Chelsea number in front of your customers.
- Area code
- 539 / 918
- Exchanges
- 3NANPA-assigned
- Carriers
- 3
- Population
- 1,986Census 2024 est.
Chelsea area codes
Chelsea, in Rogers County, Oklahoma, had a Census-estimated population of 1,986 in July 2024. NANPA lists 3 exchanges for its rate center across 2 area codes; 539 has the most (2, 67%). 539 is part of an overlay with 918, so a new local number in Chelsea may carry any of those codes depending on which have numbers available. Chelsea is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 539 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
Chelsea exchanges by carrier
3 carriers hold the 3 exchanges assigned to Chelsea's rate center. Teleport Communications America Ok - LLC has the most, with 1. 3 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 |
|---|---|---|
| Teleport Communications America Ok - LLC | 1 | 33% |
| Onvoy, LLC - Ok | 1 | 33% |
| Southwestern Bell | 1 | 33% |
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.
Chelsea phone prefixes
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Chelsea's rate center (CHELSEA). The earliest assignment date recorded in the file for these codes is 2016. 1 of the 3 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 539 | 207, 267 |
| 918 | 789 |
Source: NANPA utilized central office code file.
When Chelsea's exchanges were assigned
Assignment dates show when each block of Chelsea numbers was added to the local supply.
| 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 Chelsea
Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Chelsea's numbers are rated to the CHELSEA rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Chelsea number.
New local numbers are drawn from carrier inventory, so the exact 539 numbers available change over time; porting an existing number is free.
The local business market
Chelsea is part of the Tulsa, OK metro area, home to 1.1 million people in 2024. County Business Patterns counted 25,565 business establishments in the Tulsa, OK metro area in 2023, employing 402,255 people. The largest sectors by establishment count are retail trade (3,120), professional, scientific, and technical services (2,991), and health care and social assistance (2,959).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 789 | 17,279 | 21.9 |
| Full-service restaurants | 752 | 17,476 | 23.2 |
| Physician practices | 692 | 7,964 | 11.5 |
| Law offices | 569 | 2,861 | 5.0 |
| Insurance agencies and brokerages | 568 | 2,343 | 4.1 |
| Offices of real estate agents and brokers | 513 | 1,188 | 2.3 |
| Plumbing, heating and air-conditioning contractors | 424 | 3,918 | 9.2 |
| Dental offices | 367 | 2,934 | 8.0 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Chelsea
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.
If you already have a number in Chelsea, 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.
The comparison below uses 16 users, the rounded average establishment size in the Tulsa, OK metro area. At list prices checked September 28, 2026, that is $399.20 a month on Ooma Office Pro and $480.00 on RingCentral RingEX Core. On Callata the same 16 people cost $319.00 a month, less than either per-seat plan.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $319.00 | $3,828.00 |
| Quo (Starter) | $19.00 per user | $304.00 | $3,648.00 |
| Nextiva (Core) | $23.00 per user | $368.00 | $4,416.00 |
| Ooma (Office Pro) | $24.95 per user | $399.20 | $4,790.40 |
| Dialpad (Standard) | $27.00 per user | $432.00 | $5,184.00 |
| RingCentral (RingEX Core) | $30.00 per user | $480.00 | $5,760.00 |
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 Chelsea, OK?
Chelsea has exchanges in 539 and 918; 539 has the most.
How many phone companies have exchanges in Chelsea?
3, holding 3 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Chelsea 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 Chelsea?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 16 users come to $319.00 a month. For comparison, 16 users on RingCentral RingEX Core list at $480.00 a month (checked September 28, 2026).