Rancho Santa Margarita, California

The same ground, surveyed 96 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1901 1997

Rancho Santa Margarita grew from 11,390 to 47,949 between 1990 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.

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.

• 1901 USGS Southern California Sheet No. 1 quadrangle1:250000, 6 printings
• 1902 USGS Corona quadrangle1:125000, 7 printings
• 1904 USGS Southern California Sheet No. 1 quadrangle1:250000, 2 printings
• 1942 USGS Santiago Peak quadrangle1:62500, 3 printings
• 1947 USGS Santa Ana quadrangle1:250000
• 1949 USGS Santa Ana quadrangle1:250000
• 1954 USGS Santiago Peak quadrangle1:24000, 7 printings
• 1956 USGS Santa Ana quadrangle1:250000
• 1959 USGS Santa Ana quadrangle1:250000, 3 printings
• 1960 USGS Santa Ana quadrangle1:250000, 2 printings
• 1965 USGS Santa Ana quadrangle1:250000
• 1974 USGS Santiago Peak quadrangle1:24000
• 1983 USGS Santa Ana quadrangle1:100000
• 1997 USGS Santiago Peak quadrangle1:24000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 123 fires within 5 miles of Rancho Santa Margarita between 1992 and 2020, burning about 2,309 acres in total. 3 started naturally. 29 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.

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

Settlements close enough to share some of these fires:

• Rancho Trabuco
• Portola Hills
• Trabuco Canyon
• El Toro
• Lake Forest
• Robinson Ranch

Every fire recorded in Orange County

Regional context, not property-specific evidence. The federal mineral resources record lists 20 workings within 5 miles of Rancho Santa Margarita: 9 past producers, 6 producers, 2 prospects, 2 occurrences. 6 still produce. What was taken out: Clay, Sand and Gravel, Construction, Gold, 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.

Every working recorded in Orange County

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

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.

This settlement is recorded in the Geographic Names Information System as feature 1867054. 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.