Grass valley is located in Nevada county California with a geographic area of 5.2 square miles. The total population in Grass valley is 12,817 with 43.4% male and 56.6% female. Children under age 5 represent 3.9% of the population, under age 18 equal 18.8% of the population and over age 65 is 30.4% of the population. The median household income is $42,477, per capita income is $31,509. There are a total of 6,356 housing units with 38.5% owner occupied. Education includes 22.4% of residents that are high school graduates and 28.3% with a bachelor's degree or higher. The average temperature in Grass valley in the summer is 69 degrees, and in the winter 43 degrees.
