Area Code 231 — Michigan

Q: What time zone is area code 231?

Area code 231 is in the Eastern Time zone (Eastern Time).

Active General Purpose Code United States

Area code 231 is located in Michigan and operates on Eastern Time . The largest city served is Muskegon .

Coverage Area

Area code 231 — Michigan

Area Code Details

Area Code: 231
State / Province: Michigan (MI)
Country: United States
Time Zone: Eastern Time Eastern Time
Local Time Now: —
Status: Active
Code Type: General Purpose Code
In Service Since: June 5, 1999
Assigned: March 11, 1999
Population Served: ~94,821 est.

Cities Served

Largest City Muskegon

Muskegon Traverse City Big Rapids Cadillac Ludington Cheboygan Whitehall Charlevoix Reed City Lake Ann Mancelona Alden Torch River Bridge Elmira Newaygo Alanson Baldwin Luther

History & Relationships

Split from

616

Michigan

Rate Centers & Exchanges

18 rate centers identified within area code 231

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Other Area Codes in Michigan

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Nearby Area Codes

Frequently Asked Questions About Area Code 231

What state is area code 231?

Area code 231 is located in Michigan, United States.

Where is area code 231 from?

Area code 231 originates from Michigan. It operates in the Eastern Time zone.

What time zone is area code 231?

Area code 231 falls within the Eastern Time zone (Eastern Time).

What cities are in area code 231?

Area code 231 serves cities including Muskegon, Traverse City, Big Rapids, Cadillac, Ludington, Cheboygan, Whitehall, Charlevoix, and more.

Is a call from area code 231 a scam?

Area code 231 is a legitimate general purpose code area code serving Michigan. Like any area code, individual numbers using 231 can be used for scam calls — always verify the specific number if you receive an unexpected or suspicious call.