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County ZIP codes · California · FIPS 06105

Trinity County, CA ZIP Codes

Trinity County, California has 14 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 13 of the residential ones lie mainly in Trinity County and 1 mainly in a neighboring county; 3 cross the county line.

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Trinity County?

95526 · Bridgeville: $40k95527 · Burnt Ranch: $77k95552 · Mad River: $78k95563 · Salyer: $63k95595 · Zenia: $29k96010 · Big Bar: $29k96024 · Douglas City: $44k96041 · Hayfork: –96046 · Hyampom: –96048 · Junction City: $51k96052 · Lewiston: $37k96076 · Platina: $29k96091 · Trinity Center: $61k96093 · Weaverville: $66k960919604196010955959607695552955279552696048960939604696052960249556395526 · Bridgeville: $40k95527 · Burnt Ranch: $77k95552 · Mad River: $78k95563 · Salyer: $63k95595 · Zenia: $29k96010 · Big Bar: $29k96024 · Douglas City: $44k96041 · Hayfork: –96046 · Hyampom: –96048 · Junction City: $51k96052 · Lewiston: $37k96076 · Platina: $29k96091 · Trinity Center: $61k96093 · Weaverville: $66k960919604196010955959607695552955279552696048960939604696052960249556395526 · Bridgeville: $40k95527 · Burnt Ranch: $77k95552 · Mad River: $78k95563 · Salyer: $63k95595 · Zenia: $29k96010 · Big Bar: $29k96024 · Douglas City: $44k96041 · Hayfork: –96046 · Hyampom: –96048 · Junction City: $51k96052 · Lewiston: $37k96076 · Platina: $29k96091 · Trinity Center: $61k96093 · Weaverville: $66k960919604196010955959607695552955269609396046960529602495563
The residential ZIP codes of Trinity County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024).<$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

All 14 residential ZIP codes in Trinity County

13 ZIP codes lie mainly in Trinity County; 1 more reaches into it from a neighboring county and follows the first table.

Residential ZIP codes mainly in Trinity County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
96093 Weaverville 4,320 43 $66k $340k 100%
96041 Hayfork 2,889 9 – $284k 100%
96052 Lewiston 2,366 21 $37k $290k 100%
96048 Junction City 1,297 8 $51k $284k 100%
96024 Douglas City 1,082 10 $44k $350k 100%
96091 Trinity Center 932 2 $61k $381k 100%
95527 Burnt Ranch 622 4 $77k $338k 100%
95552 Mad River 586 4 $78k – 93%
95563 Salyer 577 9 $63k $407k 100%
96046 Hyampom 489 3 – – 100%
96010 Big Bar 212 1 $29k $267k 100%
96076 Platina 148 1 $29k – 39%
95595 Zenia 133 0 $29k $554k 100%

Partly in Trinity County

Residential ZIP codes mainly in another county that reach at least 1% into Trinity County, by their share here
In this county
95526 Bridgeville 745 6 $40k $281k 14%

Download the 14 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

3 ZIP codes of Trinity County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Trinity County and in the neighboring counties
ZIPIn TrinityElsewhere
9552614%Humboldt County86%
9555293%Humboldt County7%
9607639%Tehama County34%; Shasta County28%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Trinity County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Trinity County's ZIP codes use 2 prefixes: 955 and 960.

Three-digit prefixes of Trinity County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Trinity County's
PrefixSectional centerHereAll codes
955Eureka, CA (SCF 955)551
960Redding, CA (SCF 960)980

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.