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U.S. ZIP Code 51650
5-digit United States postal code #51650, Riverton, IA
ZIP code 51650 is located in the city (place name) Riverton, сounty Fremont in the state of Iowa. The population in ZIP code 51650 is 370 and the population density is 4.9. ZIP code 51650 refers to сounty Fremont having сounty FIPS 19071, the ratio of people from different counties in this ZIP code is as follows: all county weights - 19071: 100%. In the area of the ZIP code 51650 valid time zone America/Chicago.