Oklahoma · Central Time
539 Area Code
Area code 539 is in Oklahoma, serving northeastern Oklahoma, including Tulsa, Broken Arrow and Muskogee. It is in the Central Time zone. It shares its territory with overlay code 918, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 539 area code?
539 is a Oklahoma area code covering northeastern Oklahoma, including Tulsa, Broken Arrow and Muskogee. In the wider directory it sits in the South region.
Cities in the 539 area code
- Tulsa
- Broken Arrow
- Owasso
- Muskogee
- Bartlesville
- Bixby
- Jenks
- Sand Springs
- Sapulpa
- Claremore
- Tahlequah
- McAlester
- Glenpool
- Okmulgee
Counties served by 539
Tulsa County, Wagoner County, Rogers County, Muskogee County, Creek County, Washington County, Pittsburg County, Cherokee County, Okmulgee County and Osage County.
539 overlay codes and dialing
The 539 territory is covered by an overlay of 2 area codes: 539, 918. All of them serve the same geographic area, and the original code is 918. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 539 area code
539 went into service on April 1, 2011 as an overlay of 918, relieving number exhaustion in the Tulsa area. Rather than splitting the region, the overlay lets existing customers keep their numbers while new lines draw from the added code. Learn more in our overlay guide.
Is 539 a scam or spam risk?
539 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 539 number on your screen is no guarantee the caller is in Tulsa, OK or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Explore more
See every code in Oklahoma, compare codes across the South region, or view all Central Time codes. You can also browse the 5XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
539 area code FAQ
Where is the 539 area code?
The 539 area code is in Oklahoma, covering northeastern Oklahoma, including Tulsa, Broken Arrow and Muskogee, in the South region.
What cities are in the 539 area code?
Cities in the 539 area code include Tulsa, Broken Arrow, Owasso, Muskogee, Bartlesville, Bixby, Jenks, Sand Springs, Sapulpa and Claremore.
What time zone is 539 in?
539 is in the Central Time zone.
What is the overlay for the 539 area code?
539 shares its territory with 918. Both codes (539, 918) serve the same area, so 10-digit dialing is required for every call.
When did the 539 area code start?
539 went into service on April 1, 2011 as an overlay of 918.
Do I have to dial 10 digits for 539?
Yes. Because 539 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 539 a toll-free or premium code?
No. 539 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.