Etna, California Etna, California Etna is a city in the Scott Valley area of Siskiyou County, California, United States. The population was 737 at the 2010 census, down from 781 at the 2000 census. Originally named Rough and Ready, it was changed by statute in 1874 to Etna after the local flour mill (spelled Ætna/Aetna after Mount Ætna in Sicily). Etna is located at (41.457350, -122.896875). Etna is in Northern California near the Oregon border, located in Scott Valley near the CDP of Greenview, the city of Fort Jones, and the unincorporated community of Callahan. Etna is located at the foot of
Etna (site), Nevada Etna (site), Nevada Etna is a former townsite, now a ghost town, in Pershing County, Nevada. It lies at an elevation of 4170 feet (1271 m). Etna was established in 1865 when the mill on site began processing silver ore from nearby mines. The following year, there was a general store, an additional mill, a livery stable, surveyor's office, post office and ferry service across the Humboldt River. By 1866, one mill had been dismantled and moved to another town and the remaining mill was closed. For the remainder of the decade, milling continued off and on in a limited