Sierraville Ranger Station, Tahoe National Forest

About forestry service, 95233, Hathaway Pines, CA, US, California

Sierraville (Sierra, Spanish for "mountain range" and Ville, French for "town") is a census-designated place in Sierra County, California, United States. It is at the southern end of the huge Sierra Valley which is used primarily as pasture and is also at the junction of California State Route 49 and California State Route 89 southwest of Loyalton. Sierraville has a post office with ZIP code 96126. The post office opened under the name Sierra Valley in 1862 and became known as the Sierraville post office in 1899. The population was 200 as of the 2010 census. It is the site of the only traffic signal (a flashing red light) in Sierra County. In the winter of 2007, it was removed after an automobile accident and was replaced in the fall of 2008. == Geography == According to the United States Census Bureau, the CDP covers an area of 5.0 square miles (13.0 km2), 99.98% of it land and 0.02% of it water. === Climate === This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F. According to the Köppen Climate Classification system, Sierraville has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps. == Demographics == The 2010 United States Census reported that Sierraville had a population of 200.