Jamestown is located in Tuolumne county California with a geographic area of 3.0 square miles. The total population in Jamestown is 3,379 with 44.7% male and 55.3% female. Children under age 5 represent 2.8% of the population, under age 18 equal 18.2% of the population and over age 65 is 25.1% of the population. The median household income is $31,944, per capita income is $38,393. There are a total of 1,758 housing units with 60.2% owner occupied. Education includes 24.2% of residents that are high school graduates and 16.3% with a bachelor's degree or higher. The average temperature in Jamestown in the summer is 76 degrees, and in the winter 43 degrees.