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Oklahoma Area Codes

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State: Oklahoma (OK)
Area Codes: 5
Timezone: Central (CDT)
Current Time: 4:37 AM

About Oklahoma Area Codes

Oklahoma (OK) uses 5 telephone area codes to serve its residents and businesses. With an estimated population of 3,727,497, Oklahoma is one of the smaller states in the North American Numbering Plan (NANP). The state is primarily in the Central Time Zone (CDT). The current local time in Oklahoma is 4:37 AM.

The largest cities in Oklahoma include Oklahoma City (pop. 972,943), Tulsa (pop. 671,033), Norman (pop. 124,880), Broken Arrow (pop. 110,198) and Edmond (pop. 94,054) . Oklahoma has 77 counties spread across its territory. Each area code in OK covers a geographic region of the state, with some areas using overlay codes that share the same geographic territory as an existing area code.

When calling a Oklahoma phone number from outside the area code, you must dial the full 10-digit number: the 3-digit area code followed by the 7-digit local number. Many parts of Oklahoma now require 10-digit dialing even for local calls due to overlay area codes and the nationwide 988 Suicide & Crisis Lifeline implementation.

All Oklahoma Area Codes

The table below lists every active area code in Oklahoma, along with the major city served and other cities covered by each code.

Area Code Major City Other Cities
405 Oklahoma City Tulsa, Norman, Edmond, Stillwater, Enid, Shawnee, Yukon, Mustang and more
539 Tulsa Wagoner, Stroud, Haskell, Inola, Morris, Fairfax, Barnsdall, Kellyville and more
572 Oklahoma City Enid
580 Oklahoma City Tulsa, Lawton, Stillwater, Enid, Ardmore, Ponca City, Duncan, Durant and more
918 Tulsa Broken Arrow, Muskogee, Bartlesville, Owasso, Bixby, Claremore, Jenks, Sapulpa and more

Largest Cities in Oklahoma

These are the largest cities in Oklahoma by population, along with their primary area codes and counties.

City Population County
Oklahoma City 972,943 Oklahoma County
Tulsa 671,033 Tulsa County
Norman 124,880 Cleveland County
Broken Arrow 110,198 Tulsa County
Edmond 94,054 Oklahoma County
Lawton 93,025 Comanche County
Moore 62,055 Cleveland County
Midwest City 57,407 Oklahoma County
Stillwater 50,299 Payne County
Enid 49,688 Garfield County

Frequently Asked Questions

Oklahoma has 5 active area codes. These include 405 (Oklahoma City), 539 (Tulsa), 572 (Oklahoma City), 580 (Oklahoma City) and 918 (Tulsa) .

Oklahoma is primarily in the Central Time Zone (CDT). The current local time is 4:37 AM.

The area code covering the most cities in Oklahoma is 580, which serves Oklahoma City and 216+ other communities.

Yes, most areas in Oklahoma now require 10-digit dialing (area code + 7-digit number) for all local calls. This requirement was implemented across the United States starting in October 2021 to support the 988 Suicide & Crisis Lifeline. Even if you are calling within the same area code, you need to dial all 10 digits.

To call a Oklahoma number from within the United States, dial the area code followed by the 7-digit phone number (e.g., 405-XXX-XXXX). From outside the US, dial your country's exit code, then 1 (the US country code), then the full 10-digit number.

Oklahoma has 77 counties. The state's total estimated population is 3,727,497, spread across these counties and served by 5 area codes.

Oklahoma City is served by area code 405. Oklahoma has 5 area codes in total — see the complete list above.
Oklahoma at a Glance
  • Abbreviation OK
  • Area Codes 5
  • Population 3,727,497
  • Counties 77
  • Cities 732
  • Time Zone Central
  • Current Time 4:37 AM
Quick Reference
  • 405 Oklahoma City
  • 539 Tulsa
  • 572 Oklahoma City
  • 580 Oklahoma City
  • 918 Tulsa