There are 18 zip codes in Cache County, Utah. The most populated is 84321, located in Logan. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
8432149,434Logan
8434125,062Logan
8433515,787Smithfield
843199,994Hyrum
843328,418Providence
843395,915Wellsville
843185,298Hyde Park
843333,084Richmond
843202,746Lewiston
843252,263Mendon
843262,072Millville
843281,718Paradise
843271,041Newton
84305659Clarkston
84338567Trenton
84308265Cornish
84304105Cache Junction
84322Logan
showing: 18 rows

Zip Codes in Cache County, Utah by Population (2024)