Calistoga is located in Napa county California with a geographic area of 2.6 square miles. The total population in Calistoga is 5,346 with 55.4% male and 44.6% female. Children under age 5 represent 8.1% of the population, under age 18 equal 18.1% of the population and over age 65 is 25.1% of the population. The median household income is $70,954, per capita income is $51,250. There are a total of 1,998 housing units with 66.0% owner occupied. Education includes 14.7% of residents that are high school graduates and 31.3% with a bachelor's degree or higher. The average temperature in Calistoga in the summer is 71 degrees, and in the winter 43 degrees.