Area Code 231

All Information about Area Code 231
General Information about Area Code 231
Country United States
State / Province / Territory Michigan
Major City Muskegon
Time Zone Eastern (UTC-05:00)

Active Prefixes in Area Code 231

Prefix Primary City County Phone Type
231-217 Bear Lake Manistee Landline
231-837 Fremont Newaygo Wireless
231-515 Evart Osceola Landline
231-230 Elmira Otsego Landline
231-452 Newaygo Newaygo Landline
231-674 Grant Newaygo Landline
231-518 Kalkaska Kalkaska Landline
231-730 Muskegon Muskegon Wireless
231-206 Muskegon Muskegon Landline
231-725 Muskegon Muskegon Landline
231-489 Petoskey Emmet Landline
231-686 Frankfort Benzie Landline
231-662 Wellston Manistee Landline
231-348 Petoskey Emmet Landline
231-307 Morley Mecosta Landline
231-835 Glen Arbor Leelanau Wireless
231-529 Brutus Emmet Landline
231-424 Walkerville Oceana Landline
231-889 Onekama Manistee Landline
231-774 Interlochen Grand Traverse Landline
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