| ZIP Codes: | 12 ZIP Codes (9 Standard, 3 PO Box, 0 Unique) [See All] |
| Area Codes: | 369 / 530 / 707 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 2:11:31 PM |
| Population: | 15,505 [See All] |
| FIPS: | 06105 |
| Land Area: | 3,265 sq mi |
| Water Area: | 4 sq mi |
| Coordinates: | 40.6875, -123.1579 |
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15,505 residents live across 12 ZIPs covering 3,265 sq mi, served by 12 distinct USPS-recognized cities.
Population moved from 13,492 to 15,505 from 2014 to 2024 — a +14.9% change. 9 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 95552 (Mad River, $77,796 median) and poorest ZIP 95595 (Zenia, $28,704) are 15.3 miles apart — a 2.7× income gap across local geography.
Median home values vary 2.1× across this county — from $267,100 in 96010 (Big Bar) to $553,600 in 95595 (Zenia).
Density varies 272× across the county — from 0 people/sq mi in 96010 (Big Bar) to 131 in 96093 (Weaverville).
Educational attainment ranges from 4.9% bachelor's+ in 95552 (Mad River) to 37.1% in 96041 (Hayfork) — the breadth of educational profiles across the area.
Within California, this is the #54 most populous of 58 counties and ranks #58 for median household income with the #5 fastest decade growth .
Weighted by population, the typical household earns about $56,185 across the county — reflecting what a typical resident sees, not a simple ZIP average.
22.9% of adults age 25+ hold a bachelor's degree or higher (2,779 of 12,149 reporting).
9 Standard delivery, 3 PO Box only, 0 single-entity Unique ZIPs serve this county.
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.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 96093 | Weaverville | PO Box | 4,320 | $65,741 | 33.0 | 7.8% |
| 96041 | Hayfork | Standard | 2,889 | — | 287.4 | 3.4% |
| 96052 | Lewiston | Standard | 2,366 | $37,222 | 307.0 | 43.2% |
| 96048 | Junction City | Standard | 1,297 | $50,521 | 163.8 | 32.8% |
| 96024 | Douglas City | Standard | 1,082 | $43,750 | 102.6 | -7.0% |
| 96091 | Trinity Center | Standard | 932 | $61,058 | 466.7 | 61.2% |
| 95527 | Burnt Ranch | Standard | 622 | $76,667 | 312.7 | 12.5% |
| 95552 | Mad River | Standard | 586 | $77,796 | 661.5 | -0.2% |
| 95563 | Salyer | PO Box | 577 | $62,893 | 30.7 | 3.2% |
| 96046 | Hyampom | PO Box | 489 | — | 195.4 | 91.8% |
| 96010 | Big Bar | Standard | 212 | $28,958 | 441.4 | 13.4% |
| 95595 | Zenia | Standard | 133 | $28,704 | 262.6 | -26.1% |