Alpena, Michigan
Eastern Time Zone (UTC-5) · MI · —
About Area Codes in Alpena, Michigan
Alpena, Michigan is served by area code 231, which was established in 1999 as a geographic split from a larger area code region. The city falls within the Eastern time zone (UTC-5). All calls to and from Alpena use the 231 area code prefix for local and long-distance dialing.
Other cities in area code 231
Frequently Asked Questions
What area code is Alpena, Michigan?
Alpena, Michigan uses area code 231.
What time zone is Alpena in?
Alpena is in the Eastern time zone (UTC-5).
Do I need to dial 10 digits when calling Alpena?
Standard 7-digit dialing is used for local calls within Alpena. However, 10-digit dialing is always accepted and required for long-distance calls.
When was area code 231 created?
Area code 231 was established in 1999 as a geographic split from a larger area code region to serve the growing population.
What cities share area code 231 with Alpena?
Other cities sharing area code 231 with Alpena include Big Rapids, Cadillac, Ludington, Manistee, Muskegon, among others.
Alpena, MI · Eastern Time Zone