Listed on the National Register of Historic Places in 1973. 19 historic topographic surveys show this location, the earliest from 1896.
From the record
“Pío Pico State Historic Park is the site of El Ranchito, also known as the Pío Pico Adobe or Pío Pico Mansion, the final home of Pío Pico, the last governor of Alta California under Mexican rule and a pivotal figure in early California history. Located in Whittier, California, at 6003 Pioneer Blvd. near Whittier Blvd. and Interstate 605, it is California Historical Landmark No. 127, listed as "Casa de Governor Pío Pico".”
Wikipedia article Pío Pico State Historic Park, CC BY-SA 4.0.
One of 616 National Register listings published here for Los Angeles County · listed in 1973 · category: Building.
National Register reference number.73000408- the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.
Then and now
1896 to 1901
The ground this property stands on, surveyed
5 years apart. Drag the handle to wipe between them. Both sheets are
United States Geological Survey originals; neither has been altered.
18961901
Fires near this property
408 since 1992
Regional context, not property-specific
evidence. The
federal wildfire occurrence database
lists 408 fires within 5 miles of Pio Pico Casa
between 1992 and 2020, burning about 368 acres in total. None started naturally. 35 were recorded as arson.
Distance is straight-line from the map coordinates, so a fire counted
here may appear on a neighbouring settlement's page as well.
Reported cause
Fires
Missing data/not specified/undetermined
273
Arson/incendiarism
35
Smoking
32
Equipment and vehicle use
31
Misuse of fire by a minor
26
Debris and open burning
10
Recreation and ceremony
1
The most recent of
them, most recent first, with the day each was reported and the service
that recorded it.
Date
Cause
Size
Reported by
Name on the report
9 September 2010
Missing data/not specified/undetermined
1.0 acres
California Department of Forestry & Fire Protection
not named
8 September 2007
Missing data/not specified/undetermined
under an acre
California Department of Forestry & Fire Protection
not named
8 September 2007
Missing data/not specified/undetermined
under an acre
California Department of Forestry & Fire Protection
not named
7 September 2010
Missing data/not specified/undetermined
3.5 acres
California Department of Forestry & Fire Protection
not named
7 September 2005
Arson/incendiarism
under an acre
California Department of Forestry & Fire Protection
not named
6 September 2010
Debris and open burning
under an acre
California Department of Forestry & Fire Protection
not named
6 September 2006
Equipment and vehicle use
1.0 acres
California Department of Forestry & Fire Protection
not named
5 September 2018
Missing data/not specified/undetermined
under an acre
California Department of Forestry & Fire Protection
Regional context, not property-specific
evidence. The federal mineral resources record lists
17 workings within 5 miles of Pio Pico Casa: 12 past producers, 3 prospects, 1 occurrence, 1 producer.
1 still produces. What was taken out: Clay, Sand and Gravel, Construction, Stone, Crushed/Broken. Distance is straight-line from the
map coordinates, so a quarry counted here may appear on a neighbouring
settlement's page as well.
Regional context, not property-specific
evidence. The National Weather Service names
Whittier, the town this property stands in, in 3 storm reports between 1995 and 2022: 2 tornado, 1 lightning.
The reports record 1 death. Each account below is quoted exactly as the forecast office
filed it, from the NOAA Storm Events Database, and each date
opens the federal record of that event.
A severe thunderstorm spawned a tornado that briefly touched down on the 14800 block of Dalman Street. Witnesses said it tore through a chain link gate, swirled rubbish cans in the air, and snapped off ten-foot long tree branches. A rain gutter was also torn from a house.
United States Geological Survey topographic
sheets whose coverage includes this point. Matched by taking the coordinate the National Park Service records for this property, then
testing that coordinate against the published boundary of every sheet.
Other National Register properties close
enough to walk or drive between, ordered by distance from this one. Both
positions come from the same geocoding pass that matched these properties
to their map sheets.
Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.
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