ZIP Code 49431 is located in the county of Mason in the state of Michigan. 49431 ZIP Code is spread between the coordinates of +43.9672438 Latitude and -86.42732664 Longitude. 49431 ZIP Code is part of the 231 area code. There is 1 postal office in zip code 49431.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 49431. Always when you mail a package or a letter, be attentive to mention the preferred or acceptable cities. Using any city in the list of unacceptable cities may result in unforseen delays.