Area Code Information
| Area Code: | 231 |
| State: | Michigan |
| Primary City: | Muskegon, Michigan |
| Time Zone: | Eastern |
Area code 231 serves the Muskegon, Michigan region in Michigan. This area code is in the Eastern time zone.
Browse Prefixes
Click on any prefix to browse phone numbers in that exchange:
231-200
231-201
231-202
231-203
231-204
231-205
231-206
231-207
231-208
231-209
231-210
231-211
231-212
231-213
231-214
231-215
231-216
231-217
231-218
231-219
231-220
231-221
231-222
231-223
231-224
231-225
231-226
231-227
231-228
231-229
Showing sample prefixes. All prefixes from 200-999 are available.