ZIP code 94946

Marin County, including Nicasio

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Report created October 27, 2026 at www.firezones.info/zip/94946

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    82% High · 1% Very High

    All of the High land is in the State Responsibility Area, where the State Fire Marshal's zones apply.

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  • Fire history

    Share of the land inside a recorded wildfire perimeter

    36% has burned

    Most recently the 2019 Spirit Fire, which burned 10 acres here, one of 18 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    37% Extreme

    Utilities may shut off power in the CPUC High Fire-Threat District in fire weather, and homes outside it can lose power when their lines run through it.

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Land by hazard class

  1. Very High 300 acres · State Responsibility Area 1%
  2. High 20,336 acres · State Responsibility Area 82%
  3. Moderate 2,773 acres · State Responsibility Area 11%
  4. Not mapped by CAL FIRE 1,290 acres · Mostly federal land 5%

24,698 acres of land in all, 23,408 of it in the State Responsibility Area. State zones are the ones the State Fire Marshal designated, in effect since 1 April 2024. Local zones are CAL FIRE's 2025 recommendation, which each city or county adopts by ordinance and can make stricter. How to read fire zones

Largest fires

  1. 1923 Uknown Fire Of 31,769 acres in all 6,467 acres
  2. — Uknown Fire Of 3,573 acres in all 2,985 acres
  3. 1990 La Franchi Fire 394 acres
  4. — Uknown Fire Of 1,494 acres in all 183 acres
  5. — Uknown Fire Of 118 acres in all 115 acres
  6. 1941 Uknown Fire Of 79 acres in all 77 acres
  7. 1986 Dexter #2 Fire 74 acres
  8. 1986 Black Mountain Fire Of 67 acres in all 66 acres
  9. 1976 Black Mountain Fire Of 107 acres in all 63 acres
  10. 1999 Nacasio Fire 56 acres

And 8 smaller fires. In all, 8,788 acres of ZIP code 94946 have burned. Acres are the land each fire burned here, and fires that crossed less than an acre are not counted. Some older or smaller fires may be missing, and a fire perimeter can include unburned patches. How to read fire history

Sources

Fire hazard severity zones
CAL FIRE Office of the State Fire Marshal
State map published 27 June 2025, local map 2 February 2026
Fire history
CAL FIRE Fire and Resource Assessment Program
Published 28 July 2026
Power line fire risk
California Public Utilities Commission
Published 23 February 2026

This site is independent and not affiliated with CAL FIRE or the CPUC, so for an official determination, check with the agency or your city or county. How we read the data

Nearby areas

Communities in ZIP code 94946

Neighboring ZIP codes

  1. 94946 82% High · 1% Very High · this area
  2. 94903 49% High
  3. 94930 36% Very High
  4. 94933 89% High · 1% Very High
  5. 94938 19% High
  6. 94940 13% Very High
  7. 94947 77% High · <1% Very High
  8. 94949 39% High
  9. 94950 2% Moderate · <1% High
  10. 94952 32% High · 1% Very High
  11. 94956 17% High · <1% Very High
  12. 94960 75% Moderate · 3% High
  13. 94963 99% High · 1% Very High
  14. 94973 94% High · <1% Very High