Area Code 539: Oklahoma, Oklahoma
539 is a telephone area code serving Oklahoma. It is part of the North American Numbering Plan and is dialed with the country code +1.
Numbers beginning with 539 are located in Oklahoma, United States (NANP region: Northeast).
How to Dial Area Code 539
| Calling from | What to dial |
|---|---|
| Anywhere in the US or Canada | 1 539 XXX-XXXX (10-digit dialing: 539 + 7-digit number) |
| Local call inside the same area code | 7-digit number in most areas; 10 digits where an overlay code is active |
| From the UK or Europe | 00 1 539 XXX XXXX |
| From Australia | 0011 1 539 XXX XXXX |
| From a mobile phone anywhere | +1 539 XXX XXXX |
Whatever country you are calling from, the + symbol replaces the exit code. Save the contact as +1 539 XXXXXXX and it will dial correctly from any phone in the world.
Time Zone for Area Code 539
Calls to a 539 number ring in the America/Chicago time zone, standard offset UTC-06:00. Daylight saving time applies here, so the offset moves forward one hour from March to November.
Other Area Codes in Oklahoma
These codes also serve Oklahoma. Area codes are assigned by the North American Numbering Plan Administration (NANPA).
See all 4 area codes in Oklahoma →
Frequently Asked Questions
Where is area code 539?
Area code 539 is in Oklahoma, United States. It covers Tulsa (overlay).
What time zone is area code 539 in?
Area code 539 rings in the America/Chicago time zone (UTC-06:00 standard).
Do I need to dial 1 before area code 539?
Yes, for a long-distance call inside the US and Canada you dial 1 first, then 539, then the seven-digit number. The 1 is the North American long-distance trunk prefix — it is not the country code. From outside North America you dial your exit code then 1 then 539.
Is area code 539 toll-free?
No. 539 is a standard geographic area code, so normal long-distance rates apply unless your plan includes them. Toll-free NANP codes are 800, 833, 844, 855, 866, 877 and 888.