Establish a local presence by purchasing a phone number in area code 231. Phone numbers in area code 231 are associated with the state of Michigan. There are currently at least 3 U.S. cities and 110 U.S. ZIP Codes associated with this telephone area code. In addition, there are at least 800 NXX's (the three-digit code that makes up digits 4-6 of a standard 10-digit U.S. phone number) available for use along with area code 231.
Phone numbers in area code 231 are associated with the state of Michigan.
There are currently at least 3 cities in Michigan that are associated with the 231 area code: Muskegon, MI; Norton Shores, MI; and Shelby, MI.
There are at least 110 U.S. ZIP codes associated with the area code 231 at this time (view all here).
The ZIP Code of 49442 is the ZIP Code most frequently connected to the 231 area code. The 49442 ZIP Code is primarily associated with Muskegon County in the state of Michigan.
An NXX, which is also known as the a "central office code" or an "exchange", is the three-digit sequence that comprises digits 4-6 of a standard 10-digit U.S. phone number. The NXX is the second main part of a phone number that comes directly after the area code, e.g. (231)-645-xxxx.
Detailed information about phone numbers in area code 231. Establish a Michigan presence with a 231 telephone number.