ZIP code 94903

Marin County, including San Rafael, Lucas Valley-Marinwood and Santa Venetia

Search for an address

Report created October 27, 2026 at www.firezones.info/zip/94903

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    49% High

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

    Open map

  • Fire history

    Share of the land inside a recorded wildfire perimeter

    58% has burned

    Most recently the 2000 Elvia Fire, which burned 5 acres here, one of 39 fires on record.

    Open map

  • Power line fire risk

    Share of the land in the High Fire-Threat District

    20% 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.

    Open map

Land by hazard class

  1. High 6,300 acres · 4,240 state, 2,060 local 49%
  2. Moderate 3,471 acres · 2,819 state, 652 local 27%
  3. Non-wildland 2,965 acres · Local Responsibility Area 23%
  4. Not mapped by CAL FIRE 2 acres · Mostly federal land <1%

12,739 acres of land in all, 7,059 in the State Responsibility Area and 5,678 in the Local. 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 4,286 acres
  2. — Freitas Ranch Fire 1,003 acres
  3. — Uknown Fire Of 1,494 acres in all 859 acres
  4. — Uknown Fire Of 1,184 acres in all 640 acres
  5. — Uknown Fire 525 acres
  6. 1974 Marinwood Fire 423 acres
  7. 1987 Big Rock Fire Of 407 acres in all 358 acres
  8. — Uknown Fire Of 288 acres in all 259 acres
  9. — Uknown Fire 228 acres
  10. — Uknown Fire Of 225 acres in all 222 acres

And 29 smaller fires. In all, 7,414 acres of ZIP code 94903 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 94903

Neighboring ZIP codes

  1. 94903 49% High · this area
  2. 94901 49% Moderate · 3% High
  3. 94930 36% Very High
  4. 94946 82% High · 1% Very High
  5. 94947 77% High · <1% Very High
  6. 94949 39% High
  7. 94960 75% Moderate · 3% High
  8. 94973 94% High · <1% Very High