ZIP code 94503

Napa and Solano counties, including American Canyon

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Report created October 27, 2026 at www.firezones.info/zip/94503

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    17% High

    Most 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

    17% has burned

    Most recently the 2021 Newell Fire, which burned 136 acres here, one of 10 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    12% Elevated

    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. High 3,104 acres · 2,049 state, 1,054 local 17%
  2. Moderate 10,205 acres · 8,946 state, 1,259 local 56%
  3. Non-wildland 4,990 acres · Local Responsibility Area 27%
  4. Not mapped by CAL FIRE 21 acres · Mostly federal land <1%

18,319 acres of land in all, 10,995 in the State Responsibility Area and 7,304 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

Fires that burned here

  1. 1961 M. Watson Fire Of 1,832 acres in all 1,790 acres
  2. 1973 Azevedo #2 Fire Of 616 acres in all 604 acres
  3. 2019 American Fire 526 acres
  4. 1985 Jameson Fire Of 873 acres in all 485 acres
  5. 1959 M. Lynch Fire Of 364 acres in all 148 acres
  6. 2017 Atlas Fire Of 51,625 acres in all 147 acres
  7. 2021 Newell Fire Cause: Vehicle 136 acres
  8. 2018 Bellagio Fire 13 acres
  9. 2020 Kirkland Fire Of 21 acres in all · Cause: Power lines 5 acres
  10. 2020 Newell Fire Cause: Arson 3 acres

In all, 3,185 acres of ZIP code 94503 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 94503

Neighboring ZIP codes

  1. 94503 17% High · this area
  2. 94534 10% Very High
  3. 94558 56% Very High
  4. 94559 34% High · 1% Very High
  5. 94589 7% Moderate
  6. 94591 53% Moderate