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Rancho San Diego, California

30 topographic sheets cover this place, the earliest surveyed in 1903 and the latest in 1994. It stands in the San Diego census division. It lies in ZIP code area 92019. It lies near Jamacha Valley. The Survey maps it on the Jamul Mountains quadrangle. 21,858 people lived here at the 2020 count. It stands 361 feet above sea level.

Rancho San Diego within San Diego County

Then and now

1903 to 1994

The same ground, surveyed 91 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

Topographic sheet of Rancho San Diego, surveyed 1994
Topographic sheet of Rancho San Diego, surveyed 1903

Compare 1903 against another survey:

Population over time

2 figures

Rancho San Diego grew from 21,208 to 21,858 between 2010 and 2020. These are the recorded population figures Wikidata holds for this place, reached through the Geographic Names Information System number this page is keyed on rather than by name, so they belong to this place and not to another of the same name. Most are census counts, but not all are: an early figure may be a founding or settlement estimate, and an estimate published within five years of a census is left out. The change column is computed, and is left blank where more than 20 years separate a figure from the one before it, because a gap that long is not a change between two counts.

YearPeople Change
201021,208
202021,858+650 (+3%)

Topographic sheets covering this place

11 surveys from 30 printed sheets

Matched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.

Fires near this place

589 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 589 fires within 5 miles of Rancho San Diego between 1992 and 2020, burning about 1,278 acres in total. 5 started naturally. 81 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/undetermined325
Equipment and vehicle use92
Arson/incendiarism81
Recreation and ceremony30
Debris and open burning21
Misuse of fire by a minor18
Smoking10
Natural5
Power generation/transmission/distribution4
Other causes2
Fireworks1

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

DateCause SizeReported by Name on the report
9 September 2004Missing data/not specified/undeterminedunder an acreSan Diego National Wildlife RefugeSYCUAN
9 September 2002Arson/incendiarismunder an acreCalifornia Desert DistrictPROCTOR
9 September 2002Arson/incendiarismunder an acreSan Diego National Wildlife RefugePROCTOR3
9 September 2002Arson/incendiarismunder an acreSan Diego National Wildlife RefugePROCTOR2
9 September 1994Missing data/not specified/undetermined4.0 acresSan Diego National Wildlife RefugePAR
8 September 2006Recreation and ceremonyunder an acreSan Diego National Wildlife RefugeJAMACHA
8 September 2006Equipment and vehicle useunder an acreSan Diego National Wildlife RefugeCREEK
8 September 1998Equipment and vehicle useunder an acreSan Diego UnitPOWERLINE

Settlements close enough to share some of these fires:

Every fire recorded in San Diego County

Mines and quarries near this place

10 of 37 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 37 workings within 5 miles of Rancho San Diego: 21 past producers, 13 producers, 2 occurrences, 1 prospect. 13 still produce. What was taken out: Stone, Crushed/Broken, Sand and Gravel, Construction, Granite, Gold. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Where SiteCommodity StatusRecorded
Coyote Mountains Nickel ProspectNickelOccurrenceGarnierite
Coyote Mtn Gypsum & SSulfur, Gypsum-AnhydriteProducerGypsum
Dehesa DepositStone, DimensionOccurrence
El Granito Mineral SpringsGeothermalProducer
Mcginty Mountain DepositFeldsparPast Producer
Mcginty Mtn Deposit Dehesa CorntyFeldsparProducer
Independent Stone Co QuarryStoneProducer
Unnamed QuarryStonePast Producer
Unnamed QuarryStonePast Producer
Lost Peg Leg ClaimGoldProspect

Every working recorded in San Diego County

Nearest settlements

The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.

Map PlaceDistance Sheets
Jamacha Junction0.7 miles30
Jamacha1.3 miles30
Calavo Gardens1.7 miles42
Homelands2.0 miles30
Hillsdale2.2 miles42
Casa de Oro2.4 miles30
Mount Helix2.9 miles42
Spring Valley3.4 miles30

Elsewhere

Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.

Wikipedia article on Rancho San DiegoAn encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied.
Wikidata item Q1489677The structured record the population and elevation above come from. Public domain (CC0).

Provenance

This settlement is recorded in the Geographic Names Information System as feature 1867053. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.

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.