A North American area code 231 serves the northwestern part of the lower peninsula. It also serves some parts of the upper peninsula.
History:
231 was originally a split from area code 616. It covers the north half of area 616. 616 served the whole western part of the lower peninsula but then it became short and 231 was introduced to serve the northwestern part of the lower peninsula. It also serves west Michigan which was previously served by 616.
Location:
Area code 231 serves the Michigan state and the major city included in this area code is Muskegon.
Timezone:
The eastern time zone is the time zone of area code 231. The eastern time zone is also known as the American/New York time zone.
Countries included in area code:
| COUNTRY | TOTAL POPULATION | % OF 231 | % OF COUNTRY |
| Grand traverse | 86986 | 5% | 82% |
| Muskegon | 172188 | 5% | 35% |
| Newaygo | 48460 | 8% | 97% |
| Wexford | 32735 | 5% | 100% |
| Mecosta | 42798 | 3% | 64% |
| Osceola | 23528 | 5% | 100% |
| Cheboygan | 26152 | 7% | 87% |
| Antrim | 23580 | 5% | 100% |
| Emmet | 32694 | 5% | 89% |
| Kalkaska | 17153 | 5% | 56% |
| Missaukee | 14849 | 5% | 100% |
| Charlevoix | 25948 | 8% | 100% |
| Mason | 28705 | 5% | 56% |
| Lake | 11539 | 5% | 41% |
| Oceana | 26570 | 5% | 100% |
| Manistee | 24733 | 5% | 42% |
| Montcalm | 63342 | 1% | 44% |
| Benzie | 17525 | 3% | 12% |
| Leelanau | 21708 | 7% | 40% |
| Clare | 30926 | 7% | 31% |
| Ostego | 24164 | 0% | 6% |
Cities included in area code 231:
| CITY | TOTAL POPULATION | % OF 231 | % OF CITY |
| Muskegon | 38401 | 0% | 100% |
| Norton Shores | 23994 | 0% | 100% |
| Traverse city | 14674 | 0% | 100% |
| Muskegon height | 10856 | 0% | 100% |
| Big rapids | 10601 | 0% | 100% |
| Cadillac | 10355 | 0% | 100% |
| Ludington | 8076 | 0% | 100% |
| Manistee | 6226 | 0% | 100% |
| Petoskey | 5670 | 0% | 100% |
| Cheboygan | 4867 | 0% | 100% |
| Wolf lake | 4104 | 0% | 100% |
| Fremont | 4081 | 0% | 100% |
| Roosevelt park | 3831 | 0% | 100% |
| North Muskegon | 3768 | 0% | 100% |
| Boyne city | 3735 | 0% | 100% |
| Canadian lakes | 2756 | 0% | 100% |
| White hall | 1706 | 0% | 100% |
| Charlevoix | 2513 | 0% | 100% |
| Reed city | 2425 | 0% | 100% |
| Montague | 2361 | 1% | 100% |
| East Jordan | 2351 | 0% | 100% |
| Hart | 2126 | 0% | 100% |
| Shelby | 2065 | 0% | 100% |
| Kalkaska | 2020 | 0% | 100% |
| Newaygo | 1976 | 0% | 100% |
| Indian river | 1959 | 0% | 100% |
| Evart | 1903 | 0% | 100% |
| Howard city | 1808 | 0% | 100% |
| Twin lake | 1720 | 0% | 100% |
| Elk rapids | 1642 | 0% | 100% |
| Greilickville | 1530 | 0% | 100% |
| Kingsley | 1480 | 0% | 100% |
| White cloud | 1408 | 0% | 100% |
| Mancelona | 1390 | 0% | 100% |
| Rapid city | 1352 | 0% | 100% |
| Lakewood club | 1291 | 0% | 100% |
| Manton | 1287 | 0% | 100% |
| Frankfort | 1286 | 0% | 100% |
| Ravenna | 1219 | 1% | 100% |
| Scottville | 1214 | 0% | 100% |
| Baldwin | 1208 | 0% | 100% |
| Harbor springs | 1194 | 0% | 100% |
| Bellaire | 1086 | 0% | 100% |
| Fruitport | 1093 | 0% | 100% |
| Hesperia | 954 | 0% | 100% |
| Central lake | 952 | 0% | 100% |
| Chums corner | 946 | 0% | 100% |
| Lakes of the north | 925 | 0% | 100% |
| Grant | 894 | 0% | 100% |
| Marion | 872 | 0% |
Frequently asked questions:
What city has a 231 area code?
It serves the Michigan state and the major cities included in this area code are Muskegon, Norton Shores, and traverse city.
What is the timezone of area code 231?
EASTERN TIME ZONE
The eastern time zone is the time zone of this area code. The eastern time zone is also known as the American/New York time zone.
How big is area code 231?
231 serves the northwestern part of the lower peninsula and Michigan. It also serves some parts of the upper peninsula.
Conclusion:
A North American area code 231 serves the northwestern part of the lower peninsula. It also serves some parts of the upper peninsula.
231 was originally a split from area code 616. It also serves west Michigan which was previously served by 616. It serves the Michigan state and the major city included in this area code is Muskegon.
The eastern time zone is the time zone of this area code. The eastern time zone can also called as American/New York time zone.
For more, you may also read: area code 209