Colusa, California
19 topographic sheets cover this place, the earliest surveyed in 1907 and the latest in 1994. It stands in the East Colusa census division. It lies in ZIP code area 95932. The Survey maps it on the Colusa quadrangle. 6,411 people lived here at the 2020 count. It stands 49 feet above sea level.
Then and now
1907 to 1994The same ground, surveyed 87 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.


On record in Colusa
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 4 records
Colusa Carnegie Librarylisted 1990
Colusa Grammar Schoollisted 1978
Colusa High School and Groundslisted 1976
Grand Island Shrinelisted 1974
Population over time
2 figuresColusa grew from 5,971 to 6,411 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 | 5,971 | |
| 2020 | 6,411 | +440 (+7%) |
Topographic sheets covering this place
9 surveys from 19 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.
- 1907 USGS Colusa quadrangle1:62500, 3 printings
- 1918 USGS Powell Slough quadrangle1:31680, 2 printings
- 1942 USGS Colusa quadrangle1:62500
- 1952 USGS Colusa quadrangle1:24000, 4 printings
- 1953 USGS Colusa quadrangle1:62500, 2 printings
- 1957 USGS Ukiah quadrangle1:250000, 3 printings
- 1960 USGS Ukiah quadrangle1:250000, 2 printings
- 1991 USGS Colusa quadrangle1:24000
- 1994 USGS Lakeport quadrangle1:100000
Fires near this place
35 since 1999Regional context, not property-specific evidence. The federal wildfire occurrence database lists 35 fires within 5 miles of Colusa between 1999 and 2017, burning about 68 acres in total. None started naturally. None was 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 | 20 |
| Debris and open burning | 10 |
| Equipment and vehicle use | 2 |
| Firearms and explosives use | 1 |
| Recreation and ceremony | 1 |
| Smoking | 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 |
|---|---|---|---|---|
| 3 September 2002 | Debris and open burning | under an acre | Colusa National Wildlife Refuge | COL T5 |
| 24 September 2004 | Debris and open burning | 2.0 acres | Colusa National Wildlife Refuge | HIGHWAY 20 |
| 18 September 2002 | Missing data/not specified/undetermined | 1.0 acres | Colusa National Wildlife Refuge | COLT1.1 |
| 31 August 2017 | Missing data/not specified/undetermined | 1.0 acres | Colusa National Wildlife Refuge | COLUSA REFUGE |
| 27 August 2002 | Missing data/not specified/undetermined | under an acre | Colusa National Wildlife Refuge | 20COLUSA |
| 22 August 2013 | Debris and open burning | 10 acres | Sacramento National Wildlife Refuge | COLUSA SHOOTING CLUB #2 |
| 21 August 2006 | Debris and open burning | 5.1 acres | California Department of Forestry & Fire Protection | not named |
| 13 August 2009 | Missing data/not specified/undetermined | under an acre | Colusa National Wildlife Refuge | COLUSA THREAT #1 |
Settlements close enough to share some of these fires:
Mines and quarries near this place
1 within 5 milesRegional context, not property-specific evidence. The federal mineral resources record lists 1 working within 5 miles of Colusa: 1 producer. All of them still produce. What was taken out: 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 |
|---|---|---|---|---|
| Cortina Mill | Sand and Gravel, Construction | Producer |
Storms near this place
2 since 2019Regional context, not property-specific evidence. The National Weather Service names Colusa in 2 storm reports between 2019 and 2025: 1 hail, 1 flood. 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 | Flood | Colusa | - | Colusa Landing RV Park along the Sacramento River within the levee flooded due to heavy rain and river flooding. |
| February 2019 | Hail | Colusa | - | Half dollar hail reported north of Colusa. |
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 |
|---|---|---|---|
| Arbee | 0.8 miles | 24 | |
| Colusa Rancheria | 2.6 miles | 16 | |
| Sycamore | 6.6 miles | 24 | |
| West Butte | 6.7 miles | 24 | |
| Williams | 8.5 miles | 17 | |
| Delphos | 8.7 miles | 17 | |
| Cortena | 9.4 miles | 17 | |
| Stegeman | 9.9 miles | 16 |
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 Colusa | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q2444930 | 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 277602. 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.








