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U.S. ZIP Code 62837
5-digit United States postal code #62837, Fairfield, IL
ZIP code 62837 is located in the city (place name) Fairfield, сounty Wayne in the state of Illinois. The population in ZIP code 62837 is 8867 and the population density is 21.0. ZIP code 62837 refers to сounty Wayne having сounty FIPS 17191, the ratio of people from different counties in this ZIP code is as follows: all county weights - 17191: 100%. In the area of the ZIP code 62837 valid time zone America/Chicago.