918 Area Code
Northeastern Oklahoma, Oklahoma
Area code 918 is located in Northeastern Oklahoma, Oklahoma. It covers Tulsa, Broken Arrow, and surrounding areas in the Central time zone (UTC-6). Administered by NANPA.
Where is area code 918?
Area code 918 is located in Northeastern Oklahoma, Oklahoma. It covers Tulsa, Broken Arrow, and surrounding areas in the Central time zone (UTC-6).
Area code 918 is overlaid by area code 539. Both codes serve the same geographic region and require 10-digit dialing for local calls.
Cities Covered by Area Code 918
Area code 918 primarily serves the Northeastern Oklahoma area of Oklahoma. The exact coverage includes Tulsa, Broken Arrow, and Owasso, along with surrounding communities and suburbs.
Time Zone
Central Time — UTC-6
Area code 918 operates in the Central Time Zone. When calling 918 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 918
Area code 918 was introduced in 1954 as a geographic area code serving Northeastern Oklahoma, Oklahoma. As demand for phone numbers grew, overlay code 539 was added to the same region, requiring 10-digit dialing for local calls. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.