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.
Then and now
1891 to 2000The 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.


Population over time
2 figuresFloriston 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.
| Year | People | Change |
|---|---|---|
| 2010 | 73 | |
| 2020 | 80 | +7 (+10%) |
Topographic sheets covering this place
11 surveys from 35 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.
- 1891 USGS Truckee quadrangle1:125000
- 1893 USGS Truckee quadrangle1:125000
- 1895 USGS Truckee quadrangle1:125000, 9 printings
- 1932 USGS Truckee quadrangle1:96000
- 1940 USGS Truckee quadrangle1:125000, 4 printings
- 1955 USGS Boca quadrangle1:24000, 7 printings
- 1955 USGS Truckee quadrangle1:62500, 4 printings
- 1958 USGS Chico quadrangle1:250000, 4 printings
- 1960 USGS Chico quadrangle1:250000
- 1977 USGS Truckee quadrangle1:100000, 2 printings
- 2000 USGS Boca quadrangle1:24000
Fires near this place
192 since 1992Regional 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 |
|---|---|
| Natural | 65 |
| Missing data/not specified/undetermined | 56 |
| Recreation and ceremony | 33 |
| Equipment and vehicle use | 17 |
| Arson/incendiarism | 8 |
| Debris and open burning | 6 |
| Smoking | 4 |
| Railroad operations and maintenance | 2 |
| Power generation/transmission/distribution | 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 2019 | Missing data/not specified/undetermined | 3.0 acres | Tahoe National Forest | RESERVOIR |
| 9 September 2003 | Arson/incendiarism | under an acre | Humboldt-Toiyabe National Forest | CALIFORNIA |
| 8 September 2017 | Missing data/not specified/undetermined | under an acre | California Department of Forestry & Fire Protection | QUARRY |
| 4 September 2019 | Recreation and ceremony | under an acre | Tahoe National Forest | BOCA |
| 4 September 1998 | Natural | under an acre | Humboldt-Toiyabe National Forest | NORTH |
| 4 September 1998 | Natural | under an acre | Humboldt-Toiyabe National Forest | ROSE |
| 4 September 1993 | Recreation and ceremony | under an acre | Nevada-Yuba-Placer Unit | SOMERSET |
| 3 September 1998 | Natural | under an acre | Humboldt-Toiyabe National Forest | BRONCO |
Settlements close enough to share some of these fires:
Mines and quarries near this place
7 within 5 milesRegional 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 | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Truckee Pit | Sand and Gravel, Construction | Producer | ||
| Hirschdale Pit | Pumice | Producer | ||
| Truckee Canyon Group | Uranium | Occurrence | ||
| Truckee Canyon Group | Uranium | Occurrence | ||
| Unnamed | Gold | Past Producer | Underground | |
| Unnamed Location | Gold | Unknown | ||
| Volcanic Cinder Deposit | Pumice | Occurrence |
Storms near this place
2 since 2023Regional 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.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| February 2025 | Heavy Rain | Floriston | - | 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 2023 | Heavy Rain | Floriston | - | A CO-OP observer (FARC1) located 2.3 mi NW of Floriston, CA, reported a total rainfall amount of 0.91 inches. |
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 |
|---|---|---|---|
| Bronco | 0.6 miles | 35 | |
| Iceland | 1.3 miles | 35 | |
| Mystic | 3.0 miles | 35 | |
| Hinton | 3.1 miles | 35 | |
| Hirschdale | 3.4 miles | 34 | |
| Boca | 3.9 miles | 35 | |
| Union Mills | 5.4 miles | 34 | |
| Prosser (historical) | 5.8 miles | 36 |
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 Floriston | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q5461916 | 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 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.










