CAL FIRE FRAP historical fire perimeters

California mapped fire perimeter acres by decade

California records are grouped by start year and ranked by GIS-calculated perimeter acres. The 2020s bar covers 2020-2025 only, yet it already stands above every full prior decade since 1950.

          8.81M acres
          Mapped for 2020-2025, the highest decade-group total even though it is a partial decade.
        

6.77M acres Mapped in the full 2010s, the next-highest decade in the ranked view.

18,047 records California fire perimeters from 1950-2025 are included; rows without a usable year are excluded.

Source: CA Open Data, California Fire Perimeters (all), CAL FIRE Fire and Resource Assessment Program, accessed July 19, 2026. Chart filters to California records from 1950 onward. Values are GIS-calculated perimeter acres, not damage or burn severity. CAL FIRE notes that historical fire perimeter records are incomplete and should be used carefully for statistical reporting.