BlockBefore

Rialto, California

38 topographic sheets cover this place, the earliest surveyed in 1896 and the latest in 1982. It stands in the San Bernardino census division. It lies in ZIP code area 92376. The Survey maps it on the San Bernardino South quadrangle. 104,026 people lived here at the 2020 count. It stands 1,257 feet above sea level.

Rialto within San Bernardino County

Then and now

1896 to 1982

The same ground, surveyed 86 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

Topographic sheet of Rialto, surveyed 1982
Topographic sheet of Rialto, surveyed 1896

Compare 1896 against another survey:

On record in Rialto

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

Population over time

2 figures

Rialto grew from 99,171 to 104,026 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
201099,171
2020104,026+4,855 (+5%)

Topographic sheets covering this place

19 surveys from 38 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

672 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 672 fires within 5 miles of Rialto between 1992 and 2020, burning about 22,947 acres in total. 2 started naturally. 108 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/undetermined433
Arson/incendiarism108
Equipment and vehicle use52
Misuse of fire by a minor32
Smoking21
Debris and open burning14
Recreation and ceremony4
Railroad operations and maintenance3
Natural2
Power generation/transmission/distribution2
Other causes1

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 2018Missing data/not specified/undeterminedunder an acreCalifornia Department of Forestry & Fire Protectionnot named
9 September 2018Missing data/not specified/undeterminedunder an acreCalifornia Department of Forestry & Fire Protectionnot named
9 September 2018Missing data/not specified/undeterminedunder an acreCalifornia Department of Forestry & Fire Protectionnot named
7 September 2010Missing data/not specified/undetermined2.0 acresCalifornia Department of Forestry & Fire Protectionnot named
7 September 2009Missing data/not specified/undetermined5.0 acresCalifornia Department of Forestry & Fire Protectionnot named
7 September 2005Missing data/not specified/undeterminedunder an acreCalifornia Department of Forestry & Fire Protectionnot named
7 September 1993Recreation and ceremony1.0 acresSan Bernardino UnitRAILROAD
6 September 2020Arson/incendiarism1.0 acresSan Bernardino Unitnot named

Settlements close enough to share some of these fires:

Every fire recorded in San Bernardino County

Mines and quarries near this place

10 of 27 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 27 workings within 5 miles of Rialto: 21 past producers, 6 producers. 6 still produce. What was taken out: Sand and Gravel, Construction, Limestone, General, Stone, Crushed/Broken, Calcium. 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
Colton Cement PlantLimestone, General, Calcium, Cement RockProducer
Lytle Creek Pit ASand and Gravel, Construction, Limestone, General, Stone, Crushed/BrokenPast Producer
Raney Borrow PitStone, Crushed/BrokenPast Producer
San Bernardino PlantLimestone, DimensionProducer
Slover Mountain QuarryCalcium, Marble, DimensionPast Producer
Calif. Portland Cement Co.Limestone, GeneralPast ProducerSedimentary
Colton DepositLimestone, GeneralPast Producer
Bloomington PitSand and Gravel, ConstructionPast Producer
Colton Pit and MillSand and Gravel, ConstructionPast ProducerSedimentary
Colton Plant and QuarrySand and Gravel, ConstructionProducer

Every working recorded in San Bernardino County

Storms near this place

9 since 1998

Regional context, not property-specific evidence. The National Weather Service names Rialto in 9 storm reports between 1998 and 2006: 4 wildfire, 2 strong wind, 2 flash flood, 1 lightning. The reports record 1 injury. 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.

WhenEvent Place namedHarm What the report says
August 1998Strong WindRialto1 hurtno account filed
July 2001WildfireRialto$350,000no account filed
December 2004Flash FloodRialto$40,000Glen Helen Parkway and Lytle Creek Road were washed out by heavy runoff.
June 2001WildfireRialto$27,000no account filed
October 2004Flash FloodRialto$5,000Water and mud rushed across Lytle Creek Road just north of Glen Helen Parkway.
April 2006LightningRialto$2,000Lightning caused minor damage to two homes and knocked out power in Rialto.
October 1999WildfireRialto-Santa Ana winds gusting to 40 mph rapidily spread a wild fire through rocky terrain along Lytle Creek Wash. About 40 acres were burned.
September 2001WildfireRialto-no account filed
May 1998Strong WindRialto-no account filed

Every storm recorded in San Bernardino 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
Bloomington2.8 miles39
West Colton2.9 miles38
Rana2.9 miles38
Fontana3.6 miles39
Muscoy3.6 miles41
Colton3.7 miles38
Bethune3.8 miles38
Bunker Hill3.9 miles38

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 RialtoAn encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied.
Wikidata item Q289661The 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 1661306. 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.