ZIP code 94503

Napa and Solano counties, including American Canyon

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Report created October 31, 2026 at www.firezones.org/zip/94503

Summary

  • Fire hazard severity zones

    Share of the land in each CAL FIRE 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 April 1, 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

  • Fire history

    Fires CAL FIRE has recorded here

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

    The most recent was the 2021 Newell Fire, which burned 136 acres here. 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

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

Sources

Fire hazard severity zones
CAL FIRE Office of the State Fire Marshal
State map published June 27, 2025, local map February 2, 2026
Fire history
CAL FIRE Fire and Resource Assessment Program
Published July 28, 2026

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