There are 11 zip codes in Kootenai County, Idaho. The most populated is 83854, located in Post Falls. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
8385450,378Post Falls
8381538,934Coeur D Alene
8381426,611Coeur D Alene
8383523,229Hayden
8385818,575Rathdrum
838017,494Athol
838695,667Spirit Lake
838101,630Cataldo
838761,566Worley
838331,390Harrison
8384299Medimont

Zip Codes in Kootenai County, Idaho by Population (2024)