The state of Oklahoma is served by the following area codes:
- 405/572: Central Oklahoma including Oklahoma City (original area code created in 1947; 572 added as overlay on April 24, 2021[1][2][3]
- 580: Western and southern Oklahoma (split from 405 in 1997)
- 539/918: Northeastern Oklahoma including Tulsa (918 created in 1953 as split from 405; 539 added as overlay in 2011)
References