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U.S. ZIP Code 51357
5-digit United States postal code #51357, Royal, IA
ZIP code 51357 is located in the city (place name) Royal, сounty Clay in the state of Iowa. The population in ZIP code 51357 is 728 and the population density is 6.7. ZIP code 51357 refers to сounty Clay having сounty FIPS 19041, the ratio of people from different counties in this ZIP code is as follows: all county weights - 19041: 100%. In the area of the ZIP code 51357 valid time zone America/Chicago.