539 area code — Tulsa, OK geographic
If a call shows area code 539, the number was issued in the Tulsa area — a code active since 2011, on Central time. Together with 918 it forms the 539/918 overlay. Because of number portability and VoIP, the area code tells you where the number was issued, not where the caller is right now.
NANPA lists 236 active NXX prefixes in 539, assigned to 38 carriers. 231 of those prefixes are pooled — shared between carriers in thousands-number blocks. The code spans 116 rate centers (billing localities).
Official projections put exhaust for the 539/918 complex at 2Q 2048.
Its parent code is 918, which it left in 2011.
The dialing plan is 10D for home-NPA local calls and 10D across codes.
Use this page to decode where 539 numbers come from — and remember that spoofing means the screen can lie about everything except your own caution.
Largest localities in 539
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Tulsa | 59 | 918 |
| Broken Arrow | 8 | 918 |
| Tahlequah | 5 | 918 |
| Bartlesville | 5 | 918 |
| Bristow | 4 | 918 |
| Pryor | 4 | 918 |
| Muskogee | 4 | 918 |
| Okmulgee | 4 | 918 |
| Owasso | 3 | 918 |
| Checotah | 3 | 918 |
FAQ
Is 539 a toll-free number?
No. 539 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 918 and 539 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 539/918 complex shares one service area, and local calls are dialed with 10 digits.
Will 539 run out of numbers?
NANPA's current forecast projects exhaust in 2Q 2048 — decades of capacity remain.
Why am I getting spam calls from 539 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 539 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 539 number from?
539 is assigned to Tulsa and surrounding areas of Oklahoma in the Central time zone. The three digits after the area code (the prefix) narrow it down to a rate center.