Trinity County ZIP Codes

Trinity County is a county of California.

ZIP codes: 12
Cities & towns: 12
Area codes: 4
Land area: 3,179 sq mi

Every ZIP code in Trinity County

955xx–960xx

The complete list of Trinity County, CA ZIP codes with the city each one delivers to.
ZIP code	City
95527	Burnt Ranch
95552	Mad River
95563	Salyer
95595	Zenia
96010	Big Bar
96024	Douglas City
96041	Hayfork
96046	Hyampom
96048	Junction City
96052	Lewiston
96091	Trinity Center
96093	Weaverville

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Trinity County codes above are listed without a column we would have to invent.

Area codes covering Trinity County

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.

Where Trinity County's ZIP codes sit

Each point is the reference point of one Trinity County ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope every ZIP code recorded in Trinity County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.