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U.S. ZIP Code 73550
5-digit United States postal code #73550, Hollis, OK
ZIP code 73550 is located in the city (place name) Hollis, сounty Harmon in the state of Oklahoma. The population in ZIP code 73550 is 2512 and the population density is 4.5. ZIP code 73550 refers to сounty Harmon having сounty FIPS 40057, the ratio of people from different counties in this ZIP code is as follows: all county weights - 40057: 100%. In the area of the ZIP code 73550 valid time zone America/Chicago.