BlockBefore

Floriston, California

35 topographic sheets cover this place, the earliest surveyed in 1891 and the latest in 2000. It stands in the Donner census division. It lies in ZIP code area 96111. It lies near Acid Flat. The Survey maps it on the Boca quadrangle. 80 people lived here at the 2020 count. It stands 6,381 feet above sea level.

Floriston within Nevada County

Then and now

1891 to 2000

The same ground, surveyed 109 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

Topographic sheet of Floriston, surveyed 2000
Topographic sheet of Floriston, surveyed 1891

Population over time

2 figures

Floriston grew from 73 to 80 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
201073
202080+7 (+10%)

Topographic sheets covering this place

11 surveys from 35 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

192 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 192 fires within 5 miles of Floriston between 1992 and 2020, burning about 4,772 acres in total. 65 started naturally. 8 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
Natural65
Missing data/not specified/undetermined56
Recreation and ceremony33
Equipment and vehicle use17
Arson/incendiarism8
Debris and open burning6
Smoking4
Railroad operations and maintenance2
Power generation/transmission/distribution1

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 2019Missing data/not specified/undetermined3.0 acresTahoe National ForestRESERVOIR
9 September 2003Arson/incendiarismunder an acreHumboldt-Toiyabe National ForestCALIFORNIA
8 September 2017Missing data/not specified/undeterminedunder an acreCalifornia Department of Forestry & Fire ProtectionQUARRY
4 September 2019Recreation and ceremonyunder an acreTahoe National ForestBOCA
4 September 1998Naturalunder an acreHumboldt-Toiyabe National ForestNORTH
4 September 1998Naturalunder an acreHumboldt-Toiyabe National ForestROSE
4 September 1993Recreation and ceremonyunder an acreNevada-Yuba-Placer UnitSOMERSET
3 September 1998Naturalunder an acreHumboldt-Toiyabe National ForestBRONCO

Settlements close enough to share some of these fires:

Every fire recorded in Nevada County

Mines and quarries near this place

7 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 7 workings within 5 miles of Floriston: 3 occurrences, 2 producers, 1 past producer, 1 unknown. 2 still produce. What was taken out: Pumice, Gold, Uranium, Sand and Gravel, Construction. 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
Truckee PitSand and Gravel, ConstructionProducer
Hirschdale PitPumiceProducer
Truckee Canyon GroupUraniumOccurrence
Truckee Canyon GroupUraniumOccurrence
UnnamedGoldPast ProducerUnderground
Unnamed LocationGoldUnknown
Volcanic Cinder DepositPumiceOccurrence

Every working recorded in Nevada County

Storms near this place

2 since 2023

Regional context, not property-specific evidence. The National Weather Service names Floriston in 2 storm reports between 2023 and 2025: 2 heavy rain. No death or injury is recorded in these reports. 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
February 2025Heavy RainFloriston-A CO-OP Observer station (FARC1) located 2.0 mi NNW of Floriston, CA, reported 24 hour rainfall/liquid totals of 1.02 inches.
November 2023Heavy RainFloriston-A CO-OP observer (FARC1) located 2.3 mi NW of Floriston, CA, reported a total rainfall amount of 0.91 inches.

Every storm recorded in Nevada 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
Bronco0.6 miles35
Iceland1.3 miles35
Mystic3.0 miles35
Hinton3.1 miles35
Hirschdale3.4 miles34
Boca3.9 miles35
Union Mills5.4 miles34
Prosser (historical)5.8 miles36

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 FloristonAn encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied.
Wikidata item Q5461916The 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 1658553. 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.