ZIP Codes of Siskiyou County, CA

Population & People
Population & People
Total Population
44,714
Household Income
Household Income
Median Income
$63,362
Housing
Housing
Total Housing Units
23,609
Business & Economy
Business & Economy
Total Businesses
1,070
Employment
Employment
Employment Rate
46.89%
Education
Education
Bachelor's Degree+
23.27%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 22 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:22 ZIP Codes (21 Standard, 1 PO Box, 0 Unique) [See All]
Area Code:530
Timezone:Pacific (GMT -08:00)
Local Time:2:11:30 PM
Population:44,714 [See All]
FIPS:06093
Land Area:6,256 sq mi
Water Area:57 sq mi
Coordinates:41.5883, -122.6628
Quick Link:
https://www.zip-codes.com/county/ca-siskiyou.asp
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California's #45 most populous county
44,714 residents across 22 ZIPs — #45 of 58 California counties.

Standout ZIPs in this County


Most Populous
Yreka · 9,964 people
22.3% of county total
Highest Income
Seiad Valley · $88,750 median
1.4× county average
Largest Land Area
Macdoel · 747.3 sq mi
Spans the most ground
Fastest Growth
Mount Shasta · 12.1% (10-yr)
6,994 → 7,839 residents
Most Educated
Mount Shasta · 31.7% bachelor's+
1,948 of 6,151 adults 25+

Things worth knowing about Siskiyou County


44,714 residents live across 22 ZIPs covering 6,256 sq mi, served by 22 distinct USPS-recognized cities.

Population moved from 45,346 to 44,714 from 2014 to 2024 — a -1.4% change. 10 ZIPs gained residents, 12 lost.

The county's wealthiest ZIP 96086 (Seiad Valley, $88,750 median) and poorest ZIP 96050 (Klamath River, $40,909) are 15.3 miles apart — a 2.2× income gap across local geography.

Median home values vary 3.1× across this county — from $143,100 in 96058 (Macdoel) to $439,500 in 96038 (Grenada).

Density varies 69× across the county — from 1 people/sq mi in 95568 (Somes Bar) to 59 in 96067 (Mount Shasta).

Educational attainment ranges from 12.9% bachelor's+ in 96058 (Macdoel) to 31.7% in 96067 (Mount Shasta) — the breadth of educational profiles across the area.

Within California, this is the #45 most populous of 58 counties and ranks #52 for median household income .

Weighted by population, the typical household earns about $59,627 across the county — reflecting what a typical resident sees, not a simple ZIP average.

23.3% of adults age 25+ hold a bachelor's degree or higher (7,688 of 33,041 reporting).

21 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Siskiyou County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
6,256
square miles
Avg density
7.1
people per sq mi
Population
44,714
across 22 ZIPs
Macdoel
747.3 sq mi
661 residents
Tulelake
619.9 sq mi
2,346 residents
Montague
582.5 sq mi
4,665 residents

All ZIP Codes in Siskiyou County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
96097YrekaStandard9,964$53,059223.51.8%
96067Mount ShastaStandard7,839$65,000133.712.1%
96094WeedStandard6,656$68,103166.54.5%
96064MontagueStandard4,665$61,157582.5-2.0%
96032Fort JonesStandard2,408$72,951469.22.9%
96134TulelakeStandard2,346$49,674619.9-6.4%
96027EtnaStandard1,908$64,308436.5-22.5%
96025DunsmuirStandard1,906$46,036167.6-9.3%
96023DorrisStandard1,178$47,237167.8-12.0%
96044HornbrookStandard1,143$51,688139.99.9%
96057MccloudStandard1,025$50,179399.7-23.0%
96058MacdoelStandard661$47,266747.3-12.1%
96039Happy CampStandard583$41,813453.6-51.7%
96038GrenadaStandard504$59,43528.9-15.9%
96050Klamath RiverStandard413$40,909330.01.2%
96086Seiad ValleyStandard348$88,750170.4-8.2%
96034GazelleStandard332$73,750159.216.5%
96014CallahanStandard307152.2102.0%
95568Somes BarStandard223262.7137.2%
96037GreenviewPO Box168$117,3797.4-23.6%
96085Scott BarStandard71$105,17976.542.0%
96031Forks Of SalmonStandard66360.7-60.0%

Adjacent & Nearby Counties