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U.S. ZIP Code 74637
5-digit United States postal code #74637, Fairfax, OK
ZIP code 74637 is located in the city (place name) Fairfax, сounty Osage in the state of Oklahoma. The population in ZIP code 74637 is 1899 and the population density is 3.9. ZIP code 74637 refers to сounty Osage having сounty FIPS 40113, the ratio of people from different counties in this ZIP code is as follows: all county weights - 40113: 100%. In the area of the ZIP code 74637 valid time zone America/Chicago.