Rancho Mission Viejo

Community in Orange County

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Report created October 27, 2026 at www.firezones.info/community/59503/rancho-mission-viejo

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    95% Very High

    Most 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

    72% has burned

    Most recently the 2021 Pico Fire, which burned 7 acres here, one of 28 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    100% 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. Very High 23,034 acres · 22,719 state, 315 local 95%
  2. High 561 acres · 451 state, 110 local 2%
  3. Moderate 211 acres · 150 state, 61 local 1%
  4. Not mapped by CAL FIRE 449 acres · Mostly federal land 2%

24,255 acres of land in all, 23,320 in the State Responsibility Area and 486 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. 1958 Steward Fire Of 68,106 acres in all 8,226 acres
  2. 1961 Outside Origin #2 Fire Of 5,019 acres in all 3,889 acres
  3. 1954 Wiegand Fire Of 4,956 acres in all 3,031 acres
  4. 1959 Talega Fire Of 3,188 acres in all 2,358 acres
  5. 1993 Ortega Fire Of 21,012 acres in all · Cause: Miscellaneous 2,191 acres
  6. 1988 Ortega Fire Of 2,471 acres in all 2,013 acres
  7. 1937 Unnamed fire Of 4,916 acres in all 1,797 acres
  8. 1958 Unnamed fire Of 11,775 acres in all 1,593 acres
  9. 1958 Kelly Fire Of 2,380 acres in all 1,467 acres
  10. 1927 Unnamed fire Of 1,857 acres in all 1,018 acres

And 18 smaller fires. In all, 17,581 acres of Rancho Mission Viejo 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

ZIP codes in Rancho Mission Viejo

Neighboring communities

  1. Rancho Mission Viejo 95% Very High · this area
  2. Coto de Caza 74% Very High
  3. Ladera Ranch 15% Very High
  4. Las Flores 74% Very High
  5. Rancho Santa Margarita 68% Very High
  6. San Clemente 42% Very High
  7. San Juan Capistrano 29% Very High