The area code 405 is located in the central part of the United States, specifically in the state of Oklahoma. It is one of the original area codes established in 1947 and serves the central portion of the state, including the capital city, Oklahoma City. The 405 area code is the oldest area code in Oklahoma and is also one of the most populous, covering several counties in the central region.
Geographic Location and Coverage
The 405 area code covers a large geographic area, including Oklahoma City and its surrounding suburbs, as well as several other cities and towns in central Oklahoma. Some of the major cities served by the 405 area code include:
- Edmond
- Midwest City
- Moore
- Norman
- Shawnee
- Stillwater
- Yukon
In addition to these cities, the 405 area code also serves several smaller towns and rural areas in central Oklahoma, providing telephone service to a significant portion of the state’s population.
Overlay and Boundary Information
In 2011, the North American Numbering Plan Administration (NANPA) announced that the 405 area code would be overlaid with a new area code, 572, to provide additional numbering capacity for the region. The overlay was implemented in 2011, and 10-digit dialing became mandatory for all calls within the 405 area code.
The 405 area code is bordered by several other area codes, including:
- 918 (northeast)
- 580 (west and northwest)
- 940 (south, in Texas)
Understanding the boundaries and overlay information of the 405 area code is essential for residents, businesses, and organizations that rely on telephone services in central Oklahoma.
| Area Code | Location | Implementation Date |
|---|---|---|
| 405 | Central Oklahoma | 1947 |
| 572 | Overlay for 405 | 2011 |
Key Points
- The 405 area code is located in central Oklahoma, covering several counties and cities, including Oklahoma City.
- The area code was established in 1947 and is one of the original area codes in the United States.
- The 405 area code was overlaid with the 572 area code in 2011 to provide additional numbering capacity.
- 10-digit dialing is mandatory for all calls within the 405 area code.
- Understanding the boundaries and overlay information of the 405 area code is essential for residents, businesses, and organizations in central Oklahoma.
The 405 area code plays a critical role in the telephone infrastructure of central Oklahoma, providing essential communication services to a significant portion of the state's population. By understanding the area code's geographic location, overlay information, and implementation history, individuals and organizations can better navigate the complexities of telephone services in the region.
What is the location of the 405 area code?
+The 405 area code is located in central Oklahoma, covering several counties and cities, including Oklahoma City.
When was the 405 area code established?
+The 405 area code was established in 1947 as one of the original area codes in the United States.
What is the purpose of the 572 overlay?
+The 572 overlay was introduced in 2011 to provide additional numbering capacity for the 405 area code, which was nearing exhaustion due to the growing population and increasing demand for telephone services in central Oklahoma.
