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U.S. ZIP Code 04421
5-digit United States postal code #04421, Castine, ME
ZIP code 04421 is located in the city (place name) Castine, сounty Hancock in the state of Maine. The population in ZIP code 04421 is 1366 and the population density is 67.8. ZIP code 04421 refers to сounty Hancock having сounty FIPS 23009, the ratio of people from different counties in this ZIP code is as follows: all county weights - 23009: 100%. In the area of the ZIP code 04421 valid time zone America/New_York.