539 area code
Tulsa area, Central Time.Area code 539 covers Tulsa, Broken Arrow, Bartlesville and 177 more places in Oklahoma, on Central Time. 918 covers the same area.
Right now in Tulsa
Central Time (CST, UTC-6; CDT, UTC-5 in summer)
Calling hours: Every day, 8 AM to 8 PM (Oklahoma law)
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Where 539 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 539 has 180. Each one's share is how many 539 numbers start there. Its biggest metro area is Tulsa, OK.
- Tulsa25%
- Broken Arrow3%
- Bartlesville2%
- Tahlequah2%
Also: Muskogee, Pryor, Okmulgee, Bristow, McAlester, Owasso, Sallisaw, Grove, Sand Springs, Sapulpa, Checotah, Wilburton + 164 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 539 number?
Sales calls to homes and cell phones have legal hours, set by Oklahoma law. Hold every 539 number to them, since you can't tell a work line from a personal cell.
What applies to 539Every day, 8 AM to 8 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
- Oklahoma lawEvery day, 8 AM to 8 PMAlso no more than 3 calls in 24 hours on the same subject.15 O.S. 775C.4 (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
539 and 918
539 went into service on April 1, 2011. 539 and 918 cover the same area, so new numbers can get either code and neighbors can have different area codes. 539 holds 23% of the area's exchanges; 918 holds the most. Local calls take all 10 digits.
- 1953918 overlay
- 2011539 starts
Source: NANPA area code database
Other Oklahoma area codes
All Oklahoma area codesCalling a list of 539 numbers?
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539 area code FAQ
What area code is 539?
539 is an Oklahoma area code for Tulsa, Broken Arrow, Bartlesville, Tahlequah and 176 more places.
What time zone is the 539 area code in?
Central Time (CST, UTC-6; CDT, UTC-5 in summer).
Is 918 the same as 539?
Same area, different code. 539 and 918 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 539 numbers?
Every day, 8 AM to 8 PM, local time, under Oklahoma law.
When did the 539 area code start?
On April 1, 2011.
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