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U.S. ZIP Code 48631
5-digit United States postal code #48631, Kawkawlin, MI
ZIP code 48631 is located in the city (place name) Kawkawlin, сounty Bay in the state of Michigan. The population in ZIP code 48631 is 4643 and the population density is 54.1. ZIP code 48631 refers to сounty Bay having сounty FIPS 26017, the ratio of people from different counties in this ZIP code is as follows: all county weights - 26017: 100%. In the area of the ZIP code 48631 valid time zone America/Detroit.