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U.S. ZIP Code 52340
5-digit United States postal code #52340, Tiffin, IA
ZIP code 52340 is located in the city (place name) Tiffin, сounty Johnson in the state of Iowa. The population in ZIP code 52340 is 2180 and the population density is 50.8. ZIP code 52340 refers to сounty Johnson having сounty FIPS 19103, the ratio of people from different counties in this ZIP code is as follows: all county weights - 19103: 100%. In the area of the ZIP code 52340 valid time zone America/Chicago.