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U.S. ZIP Code 59923
5-digit United States postal code #59923, Libby, MT
ZIP code 59923 is located in the city (place name) Libby, сounty Lincoln in the state of Montana. The population in ZIP code 59923 is 9856 and the population density is 2.8. ZIP code 59923 refers to сounty Lincoln having сounty FIPS 30053, the ratio of people from different counties in this ZIP code is as follows: all county weights - 30053: 100%. In the area of the ZIP code 59923 valid time zone America/Denver.