Duncan, Oklahoma
Central Time Zone (UTC-6) · OK · —
About Area Codes in Duncan, Oklahoma
Duncan, Oklahoma is served by area code 580, which was established in 1997 as a geographic split from a larger area code region. The city falls within the Central time zone (UTC-6). All calls to and from Duncan use the 580 area code prefix for local and long-distance dialing.
Frequently Asked Questions
What area code is Duncan, Oklahoma?
Duncan, Oklahoma uses area code 580.
What time zone is Duncan in?
Duncan is in the Central time zone (UTC-6).
Do I need to dial 10 digits when calling Duncan?
Standard 7-digit dialing is used for local calls within Duncan. However, 10-digit dialing is always accepted and required for long-distance calls.
When was area code 580 created?
Area code 580 was established in 1997 as a geographic split from a larger area code region to serve the growing population.
What cities share area code 580 with Duncan?
Other cities sharing area code 580 with Duncan include Ada, Altus, Ardmore, Bartlesville, Chickasha, among others.
Duncan, OK · Central Time Zone