San Antonio Heights, California
49 topographic sheets cover this place, the earliest surveyed in 1897 and the latest in 1995. It stands in the Ontario census division. It lies in ZIP code area 91784. It lies near Frankish Canyon. The Survey maps it on the Mount Baldy quadrangle. 3,441 people lived here at the 2020 count. It stands 2,103 feet above sea level.
Then and now
1897 to 1995The same ground, surveyed 98 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.


Compare 1897 against another survey:
On record in San Antonio Heights
Buildings and businesses the archive holds for this place. Each opens its own page, with the source record it came from.
On the National Register 1 record
- San Antonio Heights Grove Houselisted 2024
Population over time
2 figuresSan Antonio Heights grew from 3,371 to 3,441 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.
| Year | People | Change |
|---|---|---|
| 2010 | 3,371 | |
| 2020 | 3,441 | +70 (+2%) |
Topographic sheets covering this place
21 surveys from 49 printed sheetsMatched 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.
- 1897 USGS Cucamonga quadrangle1:62500
- 1900 USGS Cucamonga quadrangle1:62500
- 1901 USGS Southern California Sheet No. 1 quadrangle1:250000, 6 printings
- 1903 USGS Cucamonga quadrangle1:62500, 11 printings
- 1904 USGS Southern California Sheet No. 1 quadrangle1:250000, 2 printings
- 1933 USGS Ontario quadrangle1:31680
- 1940 USGS Evey Canyon quadrangle1:24000, 2 printings
- 1940 USGS Evey Canyon quadrangle1:20000
- 1942 USGS Ontario and Vicinity quadrangle1:31680, 2 printings
- 1944 USGS Cucamonga quadrangle1:62500
- 1953 USGS San Bernardino quadrangle1:250000, 2 printings
- 1954 USGS Mt. Baldy quadrangle1:24000, 2 printings
- 1954 USGS Ontario quadrangle1:62500, 5 printings
- 1956 USGS San Bernardino quadrangle1:250000
- 1957 USGS San Bernardino quadrangle1:250000
- 1958 USGS San Bernardino quadrangle1:250000
- 1959 USGS San Bernardino quadrangle1:250000
- 1966 USGS San Bernardino quadrangle1:250000
- 1967 USGS Mt. Baldy quadrangle1:24000, 5 printings
- 1982 USGS San Bernardino quadrangle1:100000
- 1995 USGS Mount Baldy quadrangle1:24000
Fires near this place
305 since 1992Regional context, not property-specific evidence. The federal wildfire occurrence database lists 305 fires within 5 miles of San Antonio Heights between 1992 and 2020, burning about 12,579 acres in total. 8 started naturally. 79 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 | 83 |
| Arson/incendiarism | 79 |
| Equipment and vehicle use | 61 |
| Recreation and ceremony | 35 |
| Misuse of fire by a minor | 11 |
| Smoking | 11 |
| Natural | 8 |
| Fireworks | 8 |
| Debris and open burning | 6 |
| Power generation/transmission/distribution | 2 |
| Other causes | 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 2002 | Arson/incendiarism | under an acre | Angeles National Forest | BARRETT |
| 9 September 2002 | Arson/incendiarism | under an acre | Angeles National Forest | YUCCA |
| 9 September 1994 | Misuse of fire by a minor | 110 acres | San Bernardino National Forest | AMETHYST |
| 8 September 2003 | Arson/incendiarism | under an acre | Angeles National Forest | TOP |
| 5 September 2004 | Smoking | under an acre | Angeles National Forest | PALMER |
| 30 September 2010 | Missing data/not specified/undetermined | under an acre | California Department of Forestry & Fire Protection | not named |
| 3 September 1998 | Equipment and vehicle use | under an acre | Angeles National Forest | PADUA |
| 29 September 2010 | Natural | under an acre | Angeles National Forest | SUNSET |
Settlements close enough to share some of these fires:
Mines and quarries near this place
10 of 16 shownRegional context, not property-specific evidence. The federal mineral resources record lists 16 workings within 5 miles of San Antonio Heights: 10 past producers, 4 occurrences, 1 unknown, 1 producer. 1 still produces. What was taken out: Sand and Gravel, Construction, Tungsten, Graphite, Clay. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Big Horn Mine | Gemstone | Past Producer | ||
| San Antonio Canyon Corundum | Corundum | Occurrence | ||
| San Gabriel Canyon Area | Gold | Producer | ||
| Unnamed Location | Clay | Unknown | ||
| Upland South Pit | Sand and Gravel, Construction, Gold, Silver | Past Producer | ||
| Barrett Canyon | Graphite | Past Producer | ||
| Eva Canyon | Graphite | Occurrence | ||
| Marble Canyon | Tungsten | Occurrence | ||
| Marble Canyon | Tungsten | Occurrence | ||
| Campus Pit | Sand and Gravel, Construction | Past Producer |
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 | Place | Distance | Sheets |
|---|---|---|---|
| Los Olivos | 3.3 miles | 46 | |
| College Heights | 3.8 miles | 47 | |
| Alta Loma | 3.9 miles | 41 | |
| Upland | 4.0 miles | 43 | |
| North Ontario | 4.2 miles | 43 | |
| Rancho Cucamonga | 4.8 miles | 41 | |
| Las Uvas (historical) | 5.0 miles | 48 | |
| Grapeland | 5.4 miles | 48 |
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 San Antonio Heights | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q2183469 | The 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 1661373. 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.




















