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U.S. ZIP Code 51537
5-digit United States postal code #51537, Harlan, IA
ZIP code 51537 is located in the city (place name) Harlan, сounty Shelby in the state of Iowa. The population in ZIP code 51537 is 6703 and the population density is 15.9. ZIP code 51537 refers to сounty Shelby having сounty FIPS 19165, the ratio of people from different counties in this ZIP code is as follows: all county weights - 19165: 100%. In the area of the ZIP code 51537 valid time zone America/Chicago.