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405 Area Code: Oklahoma City, Oklahoma — Coverage, Time Zone & Phone Numbers
Area code 405 covers the Oklahoma City metropolitan area, including Oklahoma City, Edmond, and Norman. Learn about coverage, time zone, and how to get a local 405 number.
Area code 405 serves the Oklahoma City metropolitan area in central Oklahoma, covering the state capital and surrounding communities across 19 counties. If you need a local presence in this region, you can get a 405 phone number through Telnyx.
What area does 405 cover?
The 405 area code covers central Oklahoma, centered on Oklahoma City, the state capital and largest city.
| City | County | Population | Notes |
|---|---|---|---|
| Oklahoma City | Oklahoma | ~700,000 | State capital, largest city |
| Norman | Cleveland | ~130,000 | University of Oklahoma |
| Edmond | Oklahoma | ~95,000 | University of Central Oklahoma |
| Moore | Cleveland | ~62,000 | South OKC suburb |
| Midwest City | Oklahoma | ~58,000 | Tinker AFB adjacent |
| Stillwater | Payne | ~50,000 | Oklahoma State University |
| Shawnee | Pottawatomie | ~32,000 | East of OKC |
| El Reno | Canadian | ~20,000 | West of OKC |
| Yukon | Canadian | ~30,000 | West suburb |
| Mustang | Canadian | ~23,000 | Southwest suburb |
The region spans 19 counties in central Oklahoma. For complete coverage details, see the NANPA area code map.
405 area code time zone
Area code 405 is in the Central Time Zone (CT). During standard time, this is UTC-6 (CST). During daylight saving time, it shifts to UTC-5 (CDT).
History of the 405 area code
The 405 area code is one of the original area codes established in 1947 when AT&T created the North American Numbering Plan. Originally, 405 covered the entire state of Oklahoma.
As the population grew, the 918 area code split off in 1953 to serve Tulsa and eastern Oklahoma. Later, 580 split off in 1997 to serve western and southern Oklahoma.
In 2021, the 572 area code was added as an overlay to the same geographic region. Both 405 and 572 now serve central Oklahoma, so new phone lines may be assigned either area code. This means 10-digit dialing (area code + number) is required for all local calls. For regulatory details, visit the Oklahoma Corporation Commission.
Why the 405 region matters for business
Oklahoma City has a diverse economy with strengths in energy, aerospace, government, healthcare, and education:
Energy
- Major oil and gas company headquarters
- Continental Resources, Devon Energy, Chesapeake Energy
- Energy services and equipment
Aerospace & Defense
- Tinker Air Force Base — largest single-site employer in Oklahoma
- FAA Mike Monroney Aeronautical Center
- Boeing, Northrop Grumman operations
Government
- Oklahoma State Capitol and state agencies
- Federal facilities and regional offices
Healthcare & Education
- OU Health Sciences Center
- INTEGRIS Health
- University of Oklahoma (Norman)
- Oklahoma State University (Stillwater)
- University of Central Oklahoma (Edmond)
A local 405 number helps businesses build trust with customers in this region. Calls from local area codes have higher answer rates than unfamiliar or toll-free numbers.
Get a 405 phone number
Telnyx offers local phone numbers in the 405 area code. You get:
- Instant provisioning — activate numbers in minutes, not days
- Flexible pricing — pay only for what you use
- Voice, SMS, and MMS — full communication capabilities
- API access — programmatic number management
- Number portability — bring your existing 405 numbers to Telnyx
Browse available 405 numbers or contact sales to discuss your needs.
Neighboring area codes
| Area Code | Region | Major City | Relationship to 405 |
|---|---|---|---|
| 572 | Central Oklahoma | Oklahoma City | Overlay (same area) |
| 918/539 | Eastern Oklahoma | Tulsa | East (split from 405 in 1953) |
| 580 | Western/Southern Oklahoma | Lawton | West/South (split from 405 in 1997) |
| 940 | North Texas | Wichita Falls | South (across state line) |
| 316/620 | South Kansas | Wichita | North (across state line) |
Frequently asked questions
What area code is 405? Area code 405 serves the Oklahoma City metropolitan area in central Oklahoma, including Oklahoma City, Norman, Edmond, and surrounding communities.
What time zone is 405? Central Time (CT) — UTC-6 standard, UTC-5 during daylight saving.
Is 405 the same as 572? Yes, 572 is an overlay that covers the same geographic area as 405. Both area codes serve central Oklahoma.
Do I need to dial the area code for local calls? Yes. Since the 572 overlay was introduced in 2021, all calls require 10-digit dialing (area code + 7-digit number).
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