ZIP code 94517

Contra Costa County, including Clayton

Search for an address

Report created October 27, 2026 at www.firezones.info/zip/94517

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    88% Very High

    Most of the Very 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

    32% has burned

    Most recently the 2020 Scu Lightning Complex, which burned 695 acres here, one of 14 fires on record.

    Open map

  • Power line fire risk

    Share of the land in the High Fire-Threat District

    63% 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. 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 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. 1977 Mitchell Canyon Fire Of 4,859 acres in all 3,484 acres
  2. 2013 Morgan Fire Of 3,108 acres in all · Cause: Miscellaneous 2,662 acres
  3. 1958 Marsh Creek Fire 974 acres
  4. 1961 State Park #2 Fire Of 1,241 acres in all 968 acres
  5. 2020 Scu Lightning Complex Of 396,824 acres in all · Cause: Lightning 695 acres
  6. 1965 Windy Point Fire Of 521 acres in all 405 acres
  7. 1979 P.g.&E. Marsh Creek Fire 322 acres
  8. 2005 Bragdon Fire 311 acres
  9. 2018 Marsh Fire 245 acres
  10. 2019 Marsh 5 Fire Cause: Arson 226 acres

And 4 smaller fires. 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

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 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