Columbia is located in Tuolumne county California with a geographic area of 6.0 square miles. The total population in Columbia is 2,086 with 46.3% male and 53.7% female. Children under age 5 represent 2.3% of the population, under age 18 equal 16.2% of the population and over age 65 is 33.3% of the population. The median household income is $40,276, per capita income is $29,153. There are a total of 1,039 housing units with 72.4% owner occupied. Education includes 24.0% of residents that are high school graduates and 21.3% with a bachelor's degree or higher. The average temperature in Columbia in the summer is 76 degrees, and in the winter 43 degrees.
