Oklahoma is currently using three area codes. Oklahoma has had two area code splits and does not utilize any area code overlays
Area code 405 originally covered all of Oklahoma when it was established in 1947. It was not until 1553 that Oklahoma experienced sufficient growth in population and telephone use to need an
additional area code. It was at that time that area code 405 was split to form area code 918. In 1997 area code 405 was split again to form area code 580.
Today area code 405 covers central Oklahoma
including Oklahoma City. Area code 918 covers northeastern Oklahoma including Tulsa and area code 580 covers the southern and western portions of Oklahoma.
Changes and History of Oklahoma Area Codes:
01/01/1947
Area code 405 was put into service. Area code 405 has been split two times. In 1953 area code 405 was split to form area code 918. In 1997 area code 405 was split to form area code 580.
01/01/1953
Area code 918 was put into service. Area code 918 was created from a split of area code 405.
11/01/1997
Area code 580 was put into service. Area code 580 was created from a
split of area code 405. |
