List of Oklahoma area codes
From Infogalactic: the planetary knowledge core
The state of Oklahoma is served by the following area codes:
- 405, which serves central Oklahoma including Oklahoma City (original area code in 1947)
- 580, which serves western and southern Oklahoma (split from 405 in 1997)
- 539/918, which serves northeastern Oklahoma including Tulsa (918 created in 1953 as split from 405; 539 added as overlay in 2011)
