Oklahoma area codes
The table below lists every active Oklahoma area code with its coverage, service date and prefix count. 4 of the 5 codes are overlays — added on top of existing territories as numbers ran short.
Geographically the map reads: 405 (Oklahoma City), 918 (Tulsa), 580 (Lawton), 539 (Tulsa), 572 (Oklahoma City). Each code page lists its full coverage down to individual rate centers.
2 overlay complexes operate in Oklahoma: 405/572, 539/918. Inside a complex the codes share territory and local calls take ten digits.
Since 2010 the state has gained 2 codes: 539 (2011), 572 (2021).
Every Oklahoma code keeps Central time.
Capacity watch: 580 (exhaust 3Q 2029) is closest to needing relief, per NANPA projections.
405, in service since 1947, anchors Oklahoma City, carries 783 active prefixes across 93 rate centers, split among 43 carriers. 562 of its prefixes are pooled — shared between carriers in thousands-number blocks. It is the oldest area code in Oklahoma, in service since 1947. NANPA projects its capacity to last until 2Q 2055 — no relief needed for decades. Local dialing is ten digits.
539, in service since 2011, anchors Tulsa, carries 236 active prefixes across 116 rate centers, split among 38 carriers. 231 of its prefixes are pooled — shared between carriers in thousands-number blocks. NANPA projects its capacity to last until 2Q 2048 — no relief needed for decades. It was created from 918. Local dialing is ten digits.
572 has served Oklahoma City since 2021, carries 114 active prefixes across 52 rate centers, split among 27 carriers. 114 of its prefixes are pooled — shared between carriers in thousands-number blocks. NANPA projects its capacity to last until 2Q 2055 — no relief needed for decades. It was created from 405. Local dialing is ten digits.
580 has served Lawton since 1997, carries 730 active prefixes across 255 rate centers, split among 49 carriers. 490 of its prefixes are pooled — shared between carriers in thousands-number blocks. It is covers more rate centers (255) than any other Oklahoma area code. NANPA projects its capacity to last until 3Q 2029. It was created from 405. Local calls can still be dialed with seven digits — increasingly rare in the NANP.
918 has served Tulsa since 1953, carries 782 active prefixes across 181 rate centers, split among 56 carriers. 506 of its prefixes are pooled — shared between carriers in thousands-number blocks. NANPA projects its capacity to last until 2Q 2048 — no relief needed for decades. Local dialing is ten digits.
Note that toll-free codes (800, 833, 844, 855, 866, 877, 888) sit outside this list — they have no geographic tie to Oklahoma or anywhere else, and are assigned individually from the national SMS/800 registry.
As everywhere in the NANP: these codes say where numbers were issued, not where callers are. Per-code pages break coverage down to rate centers and prefixes.
| Code | Major area | In service | Overlay complex | Prefixes |
|---|---|---|---|---|
| 405 | Oklahoma City | 1947 | 405/572 | 783 |
| 539 | Tulsa | 2011 | 539/918 | 236 |
| 572 | Oklahoma City | 2021 | 405/572 | 114 |
| 580 | Lawton | 1997 | — | 730 |
| 918 | Tulsa | 1953 | 539/918 | 782 |
FAQ
How many area codes does Oklahoma have?
5 geographic area codes are currently in service: 405, 539, 572, 580, 918.
What was Oklahoma's first area code?
405, in service since 1947.
Will Oklahoma get a new area code soon?
Likely: NANPA projects 580 to exhaust its capacity in 3Q 2029, and relief overlays are planned years in advance.
Which time zone are Oklahoma numbers in?
All Oklahoma area codes are in the Central time zone.