| Glencoe | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | California#USA |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in California |
| Pushpin Image: | California Locator Map with US.PNG |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Name1: | California |
| Subdivision Type2: | County |
| Subdivision Name2: | Calaveras County |
| Coordinates: | 38.3542°N -120.585°W |
| Elevation M: | 838 |
| Elevation Ft: | 2749 |
Glencoe (formerly, Mosquito and Mosquito Gulch) is an unincorporated community in Calaveras County, California. It lies at an elevation of 2,749 feet (838 m) and is located at 38.3542°N -120.585°W. The community's ZIP code is 95232. Glencoe has a population of 145 people. Glencoe was named after Glencoe, Scotland, the site of the Massacre of Glencoe in 1692.
Glencoe was formerly called Mosquito Gulch. The business portion of the town was on the north side of Mosquito Gulch, but not one of the old buildings remains. The mines were first worked by Mexicans in the early 1850s. Quartz mining predominated but there was some placer mining as well.
The town today is registered as California Historical Landmark #280.
The first post office was opened at Mosquito in 1858 but closed in 1869; it was re-established as Mosquito Gulch in 1873. The name was changed to Glencoe in 1912; the post office closed again in 1916, but was re-established in 1947.
In the state legislature, Glencoe is in,[1] and .[2] Federally, Glencoe is in .[3]
In 2022, a large part of Glencoe, California was evacuated due to the Electra Fire (2022). Other fires have affected Glencoe in the past, including the Butte Fire in September 2019.