Area codes 918 and 539 are telephone area codes serving Tulsa and northeast Oklahoma. Besides Tulsa, these area codes cover cities such as Bartlesville, Broken Arrow, Claremore, Gore, Jenks, McAlester, Muskogee, Okmulgee, Pryor, Sapulpa, Tahlequah, and northeastern Oklahoma.

Area code 918 was created in 1953 as a split from area code 405. Area code 539 was created as an overlay for 918. It became active on April 1, 2011 (although 539 numbers could have been assigned for activation before that date). Mandatory ten-digit dialing became effective on March 5, 2011. It is the first overlay in Oklahoma.

The other area codes for Oklahoma are 405 and 572, which cover the Oklahoma City Metropolitan Area in central Oklahoma, and 580, which covers northern, western, and southern Oklahoma areas outside of the OKC metro.

Below is a full list of all towns and cities covered by the 539 and 918 area codes.

• NANPA area code map of Oklahoma
• List of exchanges from AreaCodeDownload.com, 918 Area Code

Oklahoma area codes: 405/572, 580, 918/539

	North: 620
West: 580, 405/572	area code 539/918	East: 417, 479, 870
	South: 580
Kansas area codes: 316, 620, 785, 913
Missouri area codes: 314/557, 417, 573/235, 636, 660, 816/975
Arkansas area codes: 479, 501, 870/327

35°30′N 95°30′W / 35.5°N 95.5°W / 35.5; -95.5