405 Area Code

Where is the 405 area code?

405 serves Oklahoma City and nearby communities in Oklahoma. In the wider directory it sits in the South region.

Overlay codes serving Oklahoma City

Oklahoma City is served by an overlay of 2 area codes: 405, 572. Because more than one code covers the same area, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes, so Oklahoma City numbers are no longer tied to a single prefix.

History of the 405 area code

405 is one of the original area codes assigned in 1947, when AT&T and Bell Laboratories created the North American Numbering Plan and divided the country into the first 86 numbering plan areas. It has served the Oklahoma City area ever since.

Is 405 a scam or spam risk?

405 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 405 number on your screen is no guarantee the caller is local or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.

Other Oklahoma area codes

See all Oklahoma area codes →

Explore more

See every code in Oklahoma, compare codes across the South region, or view all Central Time codes. You can also browse the 4XX block or the complete numeric list of US area codes.

New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.