California

Siskiyou County

Siskiyou County has an estimated 42,013 residents as of 2025 across 9 incorporated places, a decline of 4.5% since 2020.

Population (2025)
42,013
Census Bureau estimate
Change since 2020
-4.5%
Resident population
Incorporated places
9
Cities, towns and CDPs
Unincorporated share
55%
Residents outside city limits

Industries in Siskiyou County

278 establishments indexed

Establishment and employment counts from the U.S. Census Bureau County Business Patterns program.

IndustryNAICSEstablishmentsEmployees
HVAC & Plumbing23822016114
Electrical238210818
Roofing238160511
Landscaping5617302137
Pest Control561710n/an/a
Pool Service561790n/an/a
Commercial Cleaning561720620
Flooring238330n/an/a
Glass & Glazing238150n/an/a
Septic & Well238910935
Auto Repair8111111652
Auto Body811121612
Car Wash811192n/an/a
Towing488410637
Trucking484110, 4841211230
Equipment Rental532412n/an/a
Dental6212101574
Veterinary541940851
Home Health621610n/an/a
Pharmacy446110439
Medical Practice62111124144
Optometry621320n/an/a
Accounting541211, 541213932
Insurance Agency5242101333
IT & MSP541513, 54151236
Staffing561320, 5613113104
Engineering541330839
Architecture541310n/an/a
Law Firm5411101129
Security Services561612n/an/a
Printing323111n/an/a
Sign Shops339950n/an/a
Machine Shops33271032
Metal Fabrication332322, 332312n/an/a
Plastics326199n/an/a
Food Manufacturing311999, 311812n/an/a
Millwork337110, 321918n/an/a
Restaurants72251139428
Bakeries311811n/an/a
Liquor Stores445310535
Gyms & Fitness713940n/an/a
Salons & Spas812112, 812113, 81219937
Laundromats812310n/an/a
Dry Cleaning812320n/an/a
Funeral Homes812210n/an/a
Self Storage531130711
Childcare6244101242
Pet Services812910648

Cities in Siskiyou County

9
Yreka7.7KMount Shasta3.1KWeed2.6KDunsmuir1.6KMontague1.2KTulelake833Dorris803Fort Jones659Etna631

Sources

  1. U.S. Census Bureau, Population Estimates Program (Vintage 2025). Subcounty resident population estimates. Retrieved 2026-09-08.