Hamilton City, California
15 topographic sheets cover this place, the earliest surveyed in 1906 and the latest in 1987. It stands in the Orland census division. It lies in ZIP code area 95951. The Survey maps it on the Hamilton City quadrangle. 2,263 people lived here at the 2020 count. It stands 151 feet above sea level.
Then and now
1906 to 1987The same ground, surveyed 81 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.


On record in Hamilton City
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
Gianella Bridgelisted 1982
Population over time
2 figuresHamilton City grew from 1,759 to 2,263 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 | 1,759 | |
| 2020 | 2,263 | +504 (+29%) |
Topographic sheets covering this place
8 surveys from 15 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.
- 1906 USGS Willows quadrangle1:62500, 2 printings
- 1914 USGS Hamilton quadrangle1:31680
- 1949 USGS Hamilton City quadrangle1:24000, 3 printings
- 1950 USGS Hamilton City quadrangle1:24000
- 1951 USGS Willows quadrangle1:62500
- 1957 USGS Ukiah quadrangle1:250000, 3 printings
- 1960 USGS Ukiah quadrangle1:250000, 2 printings
- 1987 USGS Willows quadrangle1:100000, 2 printings
Fires near this place
161 since 1992Regional context, not property-specific evidence. The federal wildfire occurrence database lists 161 fires within 5 miles of Hamilton City between 1992 and 2020, burning about 712 acres in total. None started naturally. 4 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 | 84 |
| Equipment and vehicle use | 36 |
| Debris and open burning | 28 |
| Smoking | 4 |
| Arson/incendiarism | 4 |
| Recreation and ceremony | 3 |
| Other causes | 1 |
| 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 |
|---|---|---|---|---|
| 6 September 2002 | Missing data/not specified/undetermined | under an acre | Sacramento River National Wildlife Refuge | 32NORTH7 |
| 6 September 2002 | Missing data/not specified/undetermined | under an acre | Sacramento River National Wildlife Refuge | 32NORTH8 |
| 5 September 2002 | Missing data/not specified/undetermined | under an acre | Sacramento River National Wildlife Refuge | 32NORTH6 |
| 4 September 2002 | Missing data/not specified/undetermined | under an acre | Sacramento River National Wildlife Refuge | 32NORTH |
| 4 September 2002 | Missing data/not specified/undetermined | under an acre | Sacramento River National Wildlife Refuge | 32NORTH2 |
| 4 September 2002 | Missing data/not specified/undetermined | under an acre | Sacramento River National Wildlife Refuge | 32NORTH3 |
| 4 September 2002 | Missing data/not specified/undetermined | under an acre | Sacramento River National Wildlife Refuge | 32NORTH4 |
| 4 September 2002 | Missing data/not specified/undetermined | under an acre | Sacramento River National Wildlife Refuge | 32NORTH5 |
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 Hamilton City: 9 producers, 1 occurrence, 1 unknown. 9 still produce. What was taken out: Sand and Gravel, Construction, Gold, 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 | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Hamilton City Plant | Calcium | Producer | ||
| Unknown | Gold | Occurrence | ||
| Hamilton City Pit | Sand and Gravel, Construction | Producer | ||
| Hamilton Pit | Sand and Gravel, Construction | Producer | ||
| Martin Pit and Mi11 | Sand and Gravel, Construction | Unknown | ||
| Mills Orchards Gravel | Sand and Gravel, Construction | Producer | ||
| Pine Creek Pit | Sand and Gravel, Construction | Producer | ||
| Pit No 1 Dist No 15 Cow Creek | Sand and Gravel, Construction | Producer | ||
| Stoney Creek Pit | Sand and Gravel, Construction | Producer | ||
| Stony Creek Pit | Sand and Gravel, Construction | Producer |
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 |
|---|---|---|---|
| Mills Orchard | 2.3 miles | 15 | |
| Rotavele | 4.1 miles | 15 | |
| Monroeville (historical) | 4.9 miles | 26 | |
| Capay | 5.3 miles | 19 | |
| Cory | 7.4 miles | 18 | |
| Ordbend | 7.8 miles | 15 | |
| Meadowood Estates | 8.9 miles | 18 | |
| Malton (historical) | 9.5 miles | 18 |
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 Hamilton City | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q1573469 | 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 1658701. 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.







