Area code 918
Where 918 is, how it is dialed, which carriers hold its numbers and how many of its codes are in use, from NANPA's 10/01/2026 files.
- State
- OK
- In service
- 1953
- Assigned codes
- 782of 800 possible
- Carriers
- 56
Where area code 918 is
918 is one of 5 geographic area codes serving Oklahoma; NANPA records its in-service date as January 1, 1953. It is an overlay: 918 and 539 cover the same territory, so neighbors on the same street can have different area codes. It is in the Central time zone. The places with the most assigned exchanges include Tulsa, Broken Arrow, Muskogee, Bartlesville, and Tahlequah. By population, its largest named places are Tulsa, Broken Arrow, Owasso, Bartlesville, and Muskogee.
| Item | Value |
|---|---|
| State | Oklahoma |
| In service since | January 1, 1953 |
| Overlay | Yes, with 539 |
| Time zone | Central |
| Local calls within the code | ten digits (area code plus number) |
| Assigned central office codes | 782 |
| Rate centers with codes | 181 |
| Carriers holding codes | 56 |
| Pooled codes | 506 |
| Codes assigned since 2020 | 10 |
| Relief planning in progress | No |
Source: NANPA NPA report and utilized central office code file, both dated 10/01/2026.
Where 918 numbers are local
918 holds 29% of the 2,661 central office codes assigned in Oklahoma, the 2nd most of the state's 5 codes. 146 Census places could be matched to rate centers with 918 exchanges; the most populous are Tulsa (415,000), Broken Arrow (123,000), Owasso (42,821), and Bartlesville (38,355). For a storefront or service area inside 918, the place pages show which prefixes are rated local there.
| Place | Population (2024) | Area codes | Exchanges | Carriers |
|---|---|---|---|---|
| Tulsa, OK | 415,154 | 539, 918 | 334 | 39 |
| Broken Arrow, OK | 122,756 | 539, 918 | 37 | 10 |
| Owasso, OK | 42,821 | 539, 918 | 14 | 7 |
| Bartlesville, OK | 38,355 | 539, 918 | 31 | 10 |
| Muskogee, OK | 36,849 | 539, 918 | 33 | 15 |
| Bixby, OK | 31,728 | 918 | 7 | 2 |
| Jenks, OK | 27,869 | 539, 918 | 13 | 8 |
| Sapulpa, OK | 23,297 | 539, 918 | 9 | 7 |
| Claremore, OK | 20,602 | 539, 918 | 9 | 4 |
| Sand Springs, OK | 20,330 | 539, 918 | 9 | 6 |
| McAlester, OK | 18,108 | 539, 918 | 19 | 8 |
| Tahlequah, OK | 17,319 | 539, 918 | 25 | 10 |
| Miami, OK | 12,886 | 539, 918 | 13 | 9 |
| Okmulgee, OK | 11,354 | 539, 918 | 10 | 4 |
| Coweta, OK | 11,093 | 539, 918 | 4 | 2 |
Population: Census Vintage 2024 estimates for the matched place. Exchanges and carriers: NANPA utilized code file.
How calls are dialed in 918
According to NANPA's dialing-plan data, local calls within 918 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Ten-digit local dialing means the area code is part of how customers save and recognize your number, so print it in full everywhere.
Phone companies in area code 918
56 carriers hold the 782 central office codes assigned in 918. Southwestern Bell has the most, with 233 (30%). 506 of the codes (65%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. Numbers can move between carriers through porting, so a code's holder tells you where the block started, not where every number lives now.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Southwestern Bell | 233 | 30% |
| New Cingular Wireless PCS, LLC - Il | 93 | 12% |
| Cellco Partnership d/b/a Verizon Wireless - Ok | 50 | 6.4% |
| T-mobile USA, INC. | 49 | 6.3% |
| Valor Telecom Tx.lp-ok d/b/a Windstream Comm SW | 36 | 4.6% |
| United States Cellular - Ok | 32 | 4.1% |
| Onvoy, LLC - Ok | 29 | 3.7% |
| Level 3 Communications, LLC - Ok | 27 | 3.5% |
| Comcast Ip Phone, LLC | 18 | 2.3% |
| Cross Wireless, L.l.c. | 16 | 2.0% |
| Oklahoma Windstream, INC. | 15 | 1.9% |
| Level 3 Telecom of Oklahoma, LLC - Ok | 11 | 1.4% |
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.
Where 918 numbers are rated
NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 918 has codes in 181 rate centers. The table lists the rate centers with the most codes, with the matching Census place where the abbreviation could be matched.
| Rate center (NANPA) | Place | Codes |
|---|---|---|
| TULSA | Tulsa, OK | 275 |
| BROKENARRW | Broken Arrow, OK | 29 |
| MUSKOGEE | Muskogee, OK | 28 |
| BARTLESVL | Bartlesville, OK | 26 |
| TAHLEQUAH | Tahlequah, OK | 20 |
| MCALESTER | McAlester, OK | 16 |
| JENKS | Jenks, OK | 12 |
| OWASSO | Owasso, OK | 11 |
| MIAMI | Miami, OK | 11 |
| CATOOSA | Catoosa, OK | 9 |
| SALLISAW | Sallisaw, OK | 9 |
| POTEAU | Poteau, OK | 9 |
| CUSHING | Cushing, OK | 8 |
| VINITA | Vinita, OK | 8 |
| CLAREMORE | Claremore, OK | 8 |
| BIXBY | Bixby, OK | 7 |
| PRYOR | not matched | 7 |
| SAND SPG | Sand Springs, OK | 6 |
| SAPULPA | Sapulpa, OK | 6 |
| SPERRY | Sperry, OK | 6 |
| OKMULGEE | Okmulgee, OK | 6 |
| EUFAULA | Eufaula, OK | 6 |
| GROVE | Grove, OK | 6 |
| STILWELL | Stilwell, OK | 6 |
| COLLINSVL | Collinsville, OK | 4 |
Top 25 of 181 rate centers.
918 code assignments over time
An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 782 are assigned in 918, 98% of 800. 10 were assigned in 2020 or later.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 129 | 61% |
| 2010s | 71 | 34% |
| 2020s | 10 | 4.8% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
Getting a 918 number for your business
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 area code 918, 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.
Frequently asked questions
Where is area code 918?
918 is a geographic area code in Oklahoma. Places with the most assigned exchanges include Tulsa, Broken Arrow, Muskogee, and Bartlesville.
What time zone is area code 918 in?
NANPA lists 918 in the Central time zone.
When did area code 918 go into service?
NANPA records an in-service date of January 1, 1953.
Is 918 an overlay area code?
Yes. It shares its territory with 539.
Can my business get a 918 phone number?
Callata includes up to 3 local numbers on its $99/month plan (5 users included). Which 918 numbers are open depends on carrier inventory when you choose, and you can port an existing number for free.