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U.S. ZIP Code 73720
5-digit United States postal code #73720, Bison, OK
ZIP code 73720 is located in the city (place name) Bison, сounty Garfield in the state of Oklahoma. The population in ZIP code 73720 is 265 and the population density is 1.8. ZIP code 73720 refers to сounty Garfield having сounty FIPS 40047, the ratio of people from different counties in this ZIP code is as follows: all county weights - 40047: 100%. In the area of the ZIP code 73720 valid time zone America/Chicago.