ZIP code 94517

Contra Costa County, including Clayton

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Report created October 31, 2026 at www.firezones.org/zip/94517

Summary

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    1. Very High 26,876 acres · 25,565 state, 1,310 local 88%
    2. High 2,771 acres · 2,412 state, 359 local 9%
    3. Moderate 277 acres · 50 state, 227 local 1%
    4. Non-wildland 580 acres · Local Responsibility Area 2%
    5. Not mapped by CAL FIRE 41 acres · Mostly federal land <1%

    30,545 acres of land in all, 28,027 in the State Responsibility Area and 2,476 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

    The 10 largest of 14 fires that burned here

    1. 1977 Mitchell Canyon Fire 4,859 acres in total 3,484 acres here
    2. 2013 Morgan Fire 3,108 acres in total · Cause: Miscellaneous 2,662 acres here
    3. 1958 Marsh Creek Fire 974 acres here
    4. 1961 State Park #2 Fire 1,241 acres in total 968 acres here
    5. 2020 Scu Lightning Complex 396,824 acres in total · Cause: Lightning 695 acres here
    6. 1965 Windy Point Fire 521 acres in total 405 acres here
    7. 1979 P.g.&E. Marsh Creek Fire 322 acres here
    8. 2005 Bragdon Fire 311 acres here
    9. 2018 Marsh Fire 245 acres here
    10. 2019 Marsh 5 Fire Cause: Arson 226 acres here

    And 4 smaller fires. The most recent was the 2020 Scu Lightning Complex, which burned 695 acres here. In all, 9,672 acres of ZIP code 94517 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 94517

Neighboring ZIP codes

  1. 94517 88% Very High · this area
  2. 94506 13% Very High
  3. 94507 50% High · 5% Very High
  4. 94513 9% Very High
  5. 94521 33% High · 1% Very High
  6. 94551 10% Very High
  7. 94565 34% High · 1% Very High
  8. 94588 73% High · 2% Very High
  9. 94598 11% Very High

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