ZIP code 95318

Mariposa County, including El Portal

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Report created October 27, 2026 at www.firezones.info/zip/95318

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    5% Very High

    All of the Very 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

    97% has burned

    Most recently the 2018 Ferguson Fire, which burned 24,848 acres here, one of 80 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    >99% Elevated · <1% 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.

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Land by hazard class

  1. Very High 1,656 acres · State Responsibility Area 5%
  2. Not mapped by CAL FIRE 35,039 acres · Mostly federal land 95%

36,695 acres of land in all, 1,656 of it in the State Responsibility Area. 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. 2018 Ferguson Fire Of 96,831 acres in all · Cause: Miscellaneous 24,848 acres
  2. 1990 A-Rock Fire Of 17,758 acres in all · Cause: Lightning 10,648 acres
  3. 1909 Unnamed fire Of 14,413 acres in all 10,214 acres
  4. 1927 Unnamed fire Of 11,854 acres in all 9,182 acres
  5. 1924 Unnamed fire Of 43,313 acres in all · Cause: Miscellaneous 8,706 acres
  6. 1920 Unnamed fire 7,656 acres
  7. 2011 Motor Fire Cause: Equipment use 5,230 acres
  8. 1936 Unnamed fire Of 4,925 acres in all 4,224 acres
  9. 1931 Unnamed fire Of 3,857 acres in all 3,803 acres
  10. 2014 El Portal Fire Of 4,745 acres in all · Cause: Campfire 3,253 acres

And 70 smaller fires. In all, 35,534 acres of ZIP code 95318 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 95318

Neighboring ZIP codes

  1. 95318 5% Very High · this area
  2. 95311 29% Very High
  3. 95338 51% Very High
  4. 95345 35% Very High
  5. 95389 1% Very High