Montclair, California
43 topographic sheets cover this place, the earliest surveyed in 1897 and the latest in 1982. It stands in the Ontario census division. It lies in ZIP code area 91763. The Survey maps it on the Ontario quadrangle. 37,865 people lived here at the 2020 count. It stands 1,066 feet above sea level.
Then and now
1897 to 1982The same ground, surveyed 85 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:
Population over time
2 figuresMontclair grew from 36,664 to 37,865 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 | 36,664 | |
| 2020 | 37,865 | +1,201 (+3%) |
Topographic sheets covering this place
18 surveys from 43 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
- 1942 USGS Ontario and Vicinity quadrangle1:31680, 2 printings
- 1944 USGS Cucamonga quadrangle1:62500
- 1953 USGS San Bernardino quadrangle1:250000, 2 printings
- 1954 USGS Ontario 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 Ontario quadrangle1:24000, 3 printings
- 1982 USGS San Bernardino quadrangle1:100000
Fires near this place
429 since 1992Regional context, not property-specific evidence. The federal wildfire occurrence database lists 429 fires within 5 miles of Montclair between 1992 and 2020, burning about 463 acres in total. 3 started naturally. 59 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 | 257 |
| Arson/incendiarism | 59 |
| Misuse of fire by a minor | 32 |
| Equipment and vehicle use | 29 |
| Smoking | 27 |
| Debris and open burning | 14 |
| Power generation/transmission/distribution | 6 |
| Natural | 3 |
| Fireworks | 2 |
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 2020 | Missing data/not specified/undetermined | under an acre | San Bernardino Unit | not named |
| 7 September 2006 | Equipment and vehicle use | under an acre | California Department of Forestry & Fire Protection | not named |
| 6 September 2006 | Missing data/not specified/undetermined | under an acre | California Department of Forestry & Fire Protection | not named |
| 5 September 2009 | Missing data/not specified/undetermined | under an acre | California Department of Forestry & Fire Protection | not named |
| 5 September 2005 | Arson/incendiarism | under an acre | California Department of Forestry & Fire Protection | not named |
| 5 September 2005 | Arson/incendiarism | under an acre | California Department of Forestry & Fire Protection | not named |
| 4 September 2020 | Missing data/not specified/undetermined | 1.0 acres | San Bernardino Unit | not named |
| 4 September 2019 | Missing data/not specified/undetermined | under an acre | Los Angeles County Fire Department | not named |
Settlements close enough to share some of these fires:
Mines and quarries near this place
10 of 11 shownRegional context, not property-specific evidence. The federal mineral resources record lists 11 workings within 5 miles of Montclair: 9 past producers, 1 prospect, 1 unknown. None of them still produces. What was taken out: Sand and Gravel, Construction, Clay, Gold, Gold, Silver. 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 |
|---|---|---|---|---|
| Elmira | Gold | Past Producer | ||
| Upland South Pit | Sand and Gravel, Construction, Gold, Silver | Past Producer | ||
| Pomona Brick Co | Clay | Prospect | Sedimentary | |
| Unnamed Location | Clay | Unknown | ||
| Campus Pit | Sand and Gravel, Construction | Past Producer | ||
| Claremont Pit | Sand and Gravel, Construction | Past Producer | ||
| Upland Pit | Sand and Gravel, Construction | Past Producer | ||
| Upland Pit | Sand and Gravel, Construction | Past Producer | ||
| Upland Pit | Sand and Gravel, Construction | Past Producer | ||
| Upland Pit | Sand and Gravel, Construction | Past Producer |
Storms near this place
2 since 2001Regional context, not property-specific evidence. The National Weather Service names Montclair in 2 storm reports between 2001 and 2008: 1 lightning, 1 dust devil. The reports record 15 injuries. 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.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| April 2008 | Dust Devil | Montclair | 14 hurt, $2,500 | A strong dust devil caused 14 injuries at a church gathering at Montera Elementary School when several large tents were lofted into the air. Two people were taken to the hospital. Skies were clear at the time with temperatures in the 90s. |
| July 2001 | Lightning | Montclair | 1 hurt, $840,000 | no account filed |
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 |
|---|---|---|---|
| Sunsweet | 1.2 miles | 43 | |
| Narod | 1.4 miles | 43 | |
| College Heights | 2.0 miles | 47 | |
| Ontario | 2.3 miles | 43 | |
| North Ontario | 2.3 miles | 43 | |
| Upland | 2.6 miles | 43 | |
| Los Olivos | 3.4 miles | 46 | |
| Racimo | 4.3 miles | 41 |
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 Montclair | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q853691 | 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 252320. 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.
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.

















