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U.S. ZIP Code 68304
5-digit United States postal code #68304, Alvo, NE
ZIP code 68304 is located in the city (place name) Alvo, сounty Cass in the state of Nebraska. The population in ZIP code 68304 is 330 and the population density is 5.8. ZIP code 68304 refers to сounty Cass having сounty FIPS 31025, the ratio of people from different counties in this ZIP code is as follows: all county weights - 31025: 100%. In the area of the ZIP code 68304 valid time zone America/Chicago.