ZIP code 91377

Ventura County, including Oak Park

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Report created October 27, 2026 at www.firezones.info/zip/91377

  • Fire hazard severity zones

    Share of the land in each CAL FIRE hazard class

    75% 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

    95% has burned

    Most recently the 2018 Woolsey Fire, which burned 1,971 acres here, one of 8 fires on record.

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  • Power line fire risk

    Share of the land in the High Fire-Threat District

    100% 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 2,601 acres · 1,466 state, 1,135 local 75%
  2. High 137 acres · Local Responsibility Area 4%
  3. Moderate 105 acres · Local Responsibility Area 3%
  4. Not mapped by CAL FIRE 609 acres · Mostly federal land 18%

3,453 acres of land in all, 1,466 in the State Responsibility Area and 1,377 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

Fires that burned here

  1. 1982 Dayton Canyon Fire Of 43,097 acres in all 3,051 acres
  2. 1949 Simi Hills Fire Of 20,579 acres in all 2,466 acres
  3. 2018 Woolsey Fire Of 89,551 acres in all · Cause: Power lines 1,971 acres
  4. 1970 Clampitt Fire Of 115,537 acres in all · Cause: Power lines 1,857 acres
  5. 2005 Topanga Fire Of 23,396 acres in all 781 acres
  6. 1967 Devonshire-Parker Fire Of 23,094 acres in all 72 acres
  7. 1994 Palocomado Fire Of 652 acres in all 52 acres
  8. 1997 Rhapsody Fire Of 122 acres in all 36 acres

In all, 3,284 acres of ZIP code 91377 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 91377

Neighboring ZIP codes

  1. 91377 75% Very High · this area
  2. 91301 86% Very High
  3. 91362 77% Very High
  4. 93065 72% Very High