231 area code
Area code 231 is in Michigan, including Muskegon, Traverse City, Petoskey and Cadillac. It's on Eastern Time.
Eastern Time
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Is it a good time to call 231?
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Business hours are taken as 9 AM to 5 PM on weekdays. US telemarketing rules only allow sales calls between 8 AM and 9 PM local time.
Cities in area code 231
| City | Time zone |
|---|---|
| Muskegon, MI | Eastern Time |
| Traverse City, MI | Eastern Time |
| Petoskey, MI | Eastern Time |
| Cadillac, MI | Eastern Time |
| Charlevoix, MI | Eastern Time |
| Manistee, MI | Eastern Time |
| Big Rapids, MI | Eastern Time |
| Cheboygan, MI | Eastern Time |
| Norton Shores, MI | Eastern Time |
| Ludington, MI | Eastern Time |
| Whitehall, MI | Eastern Time |
| Cedar, MI | Eastern Time |
Other area codes in Michigan
More: look up another area code · time zone converter · US time zones map
Questions people ask
Where is area code 231?
Area code 231 is in Michigan, including Muskegon, Traverse City, Petoskey and Cadillac.
What time zone is area code 231?
231 is on Eastern Time (UTC−5, UTC−4 in summer).
What time is it in area code 231 right now?
The live clock at the top of this page shows the current local time in area code 231.