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U.S. ZIP Code 49903
5-digit United States postal code #49903, Amasa, MI
ZIP code 49903 is located in the city (place name) Amasa, сounty Iron in the state of Michigan. The population in ZIP code 49903 is 133 and the population density is 0.3. ZIP code 49903 refers to сounty Iron having сounty FIPS 26071, the ratio of people from different counties in this ZIP code is as follows: all county weights - 26071: 100%. In the area of the ZIP code 49903 valid time zone America/Menominee.