Area code 231 - Wikipedia
Area code 231 is a telephone area code in the North American Numbering Plan (NANP) for the northwestern portion of the Lower Peninsula in the U.S. state of Michigan.
Area Code 231 - Map, time zone, and phone lookup - CallerCenter
About area code 231: location, common spam callers, related area codes, and more. Includes 231 reverse phone lookup to identify spam callers.
231 Area Code - Location, Time, Map, Cities and Census Data
Dec 1, 2025 · Area Code 231 is located in Michigan. It covers 105 cities, including Muskegon, Allendale, Traverse City, Cadillac, and Big Rapids. It also covers 22 counties, including …
Area Code 231 phone numbers - Whitepages
Browse area code 231 phone numbers, prefixes and exchanges. The 231 area code serves Grand Rapids, Traverse City, Muskegon, Mesick, Petoskey, covering 97 ZIP codes in 24 …
231 Area Code - Map, Phone Lookup, Time Zone - Wirefly
Find 231 area code details including city, time zone, and map. Lookup area code 231 phone number, name, and location.
231 area code — information, time zone, map
Mar 9, 2025 · 231 is an area code located in the state of Michigan, US. The largest city it serves is Muskegon. Find out where 231 area code zone from, which states, counties and cities it …
231 Area Code - Location, Map, Current Time, Prefixes
Area code 231 is located in Michigan. Get the area’s map, cities covered, current time, prefixes, and dialing instructions.
231 Area Code: Location, Cities, Time Zone, and History
Sep 16, 2025 · If you’ve seen a 231 number pop up on your phone, are planning a move, or want a local number for your business, this guide explains where the 231 area code is, which cities …
231 Area Code: Location, prefixes, cities, map, time zone and ...
Jun 5, 1999 · Area code 231 is located in Central & NW Michigan (Lower Peninsula) and includes Grant. View the 231 area code map, major cities, location, timezone and more on …
Where Is The 231 Area Code Located? City Guide | State | Location
Nov 26, 2025 · Area code 231 is found in Michigan and serves the northwestern portion of Michigan’s Lower Peninsula. Area code 231 stretches all the way from Muskegon in the South …