918 area code

What time zone is area code 918?

Area code 918 is located in the Central Time Zone (CT) in the United States. The Central Time Zone is 6 hours behind Coordinated Universal Time (UTC-6). Cities and regions within the 918 area code, including Tulsa, Oklahoma, follow this time zone standard. Keep in mind that time zone information is subject to change, so it's recommended to verify the current time zone rules and daylight saving time observance with local authorities or official sources.

Note that the start and end dates of daylight saving time can change

History

Area code 918, established in 1953, initially covered a large portion of northeastern Oklahoma, including cities like Tulsa. Over the years, as population growth and increased telecommunication demands occurred, the area code underwent changes and splits. Notably, in 1997, the 918 area code was split to create the 580 area code, addressing the need for additional telephone numbers. Subsequently, due to continued demand, the overlay area code 539 was introduced in 2011, covering the same geographical region as 918. This overlay allowed for the coexistence of both area codes and provided additional numbering resources without requiring residents and businesses to change their existing phone numbers. Today, area code 918, along with overlay code 539, continues to serve communities in northeastern Oklahoma within the Central Time Zone.