There are 21 zip codes in Siskiyou County, California. The most populated is 96097, located in Yreka. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
9609710,154Yreka
960677,321Mount Shasta
960946,985Weed
960644,690Montague
960322,606Fort Jones
960252,247Dunsmuir
960271,907Etna
960441,215Hornbrook
960231,189Dorris
960571,158Mccloud
96058809Macdoel
96039726Happy Camp
96038499Grenada
96050400Klamath River
96034345Gazelle
96086268Seiad Valley
95568224Somes Bar
96014173Callahan
96037131Greenview
9603166Forks Of Salmon
9608538Scott Bar

Zip Codes in Siskiyou County, California by Population (2024)