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U.S. ZIP Code 77861
5-digit United States postal code #77861, Iola, TX
ZIP code 77861 is located in the city (place name) Iola, сounty Grimes in the state of Texas. The population in ZIP code 77861 is 2506 and the population density is 7.6. ZIP code 77861 refers to сounty Grimes having сounty FIPS 48185, the ratio of people from different counties in this ZIP code is as follows: all county weights - 48185: 100%. In the area of the ZIP code 77861 valid time zone America/Chicago.