Siskiyou County, CA ZIP Codes & Directory
Complete postal guide for Siskiyou County, California. Featuring the official county seat of Yreka, largest municipality Yreka, and serving 21 incorporated municipal entities.
Municipalities Located in Siskiyou County
Incorporated Cities, Towns, and Villages
Callahan
cityZIPs: 96014
Dorris
cityZIPs: 96023
Dunsmuir
cityZIPs: 96025
Etna
cityZIPs: 96027
Forks Of Salmon
cityZIPs: 96031
Fort Jones
cityZIPs: 96032
Gazelle
cityZIPs: 96034
Grenada
cityZIPs: 96038
Happy Camp
cityZIPs: 96039
Hornbrook
cityZIPs: 96044
Klamath River
cityZIPs: 96050
Macdoel
cityZIPs: 96058
Mccloud
cityZIPs: 96057
Montague
cityZIPs: 96064
Mount Shasta
cityZIPs: 96067
Scott Bar
cityZIPs: 96085
Seiad Valley
cityZIPs: 96086
Somes Bar
cityZIPs: 95568
Tulelake
cityZIPs: 96134
Weed
cityZIPs: 96094
Yreka
cityZIPs: 96097
Active USPS ZIP Codes in Siskiyou County
Standard delivery zones and geographic service boundaries
Frequently Asked Questions About Siskiyou County, CA
What is the county seat and largest city in Siskiyou County? ▾
The official county seat of Siskiyou County is Yreka, and its largest incorporated municipality by population is Yreka.
How many cities, towns, and villages are in Siskiyou County? ▾
Siskiyou County encompasses 21 incorporated municipal entities, including 21 cities, 0 towns, and 0 villages.
What is the total population and land area of Siskiyou County? ▾
According to official U.S. Census Bureau data, Siskiyou County has a population of approximately 44,076 residents and spans an area of 6,278 square miles.
How many ZIP codes operate in Siskiyou County? ▾
There are 21 active USPS ZIP codes serving addresses within Siskiyou County, California.