Etna is located in Siskiyou county California with a geographic area of 0.8 square miles. The total population in Etna is 755 with 54.3% male and 45.7% female. Children under age 5 represent 13.4% of the population, under age 18 equal 31.4% of the population and over age 65 is 25.2% of the population. The median household income is $54,712, per capita income is $21,688. There are a total of 285 housing units with 63.5% owner occupied. Education includes 18.9% of residents that are high school graduates and 24.2% with a bachelor's degree or higher. The average temperature in Etna in the summer is 76 degrees, and in the winter 43 degrees.