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
Etna Green, Indiana Etna Green, Indiana Etna Green is a town in Etna Township, Kosciusko County, in the U.S. state of Indiana. The population was 586 at the 2010 census. Etna Green was laid out in 1853. It took its name from Etna Township. The Etna Green post office was established in 1854. Etna Green is located at (41.277545, -86.047629). According to the 2010 census, Etna Green has a total area of , all land. As of the census of 2010, there were 586 people, 219 households, and 159 families residing in the town. The population density was . There were 245 housing