Oklahoma Area Codes
Oklahoma Area Codes for the Largest Cities
Cities within each Oklahoma Area Code
11/01/1997: Area code 405 was split. Some of the phone numbers had to be updated to area code 580 on that date.
Area code 405 map
Area code 539 is an overlay area code for area code 918. The two area codes serve the same area.
04/01/2011: Area code 539 was created as an overlay to area code 918. The two area codes serve the same area.
Area code 918 map
Copyright © AreaCodeAnswers.com - All Rights Reserved.