Piedmont is located in Alameda county California with a geographic area of 1.7 square miles. The total population in Piedmont is 11,454 with 49.0% male and 51.0% female. Children under age 5 represent 4.8% of the population, under age 18 equal 26.4% of the population and over age 65 is 20.8% of the population. The median household income is $250,000, per capita income is $113,591. There are a total of 3,821 housing units with 87.2% owner occupied. Education includes 5.0% of residents that are high school graduates and 83.7% with a bachelor's degree or higher. The average temperature in Piedmont in the summer is 64 degrees, and in the winter 43 degrees.