Petaluma is located in Sonoma county California with a geographic area of 14.4 square miles. The total population in Petaluma is 60,865 with 50.2% male and 49.8% female. Children under age 5 represent 4.5% of the population, under age 18 equal 19.9% of the population and over age 65 is 18.4% of the population. The median household income is $92,762, per capita income is $46,303. There are a total of 22,766 housing units with 64.1% owner occupied. Education includes 12.5% of residents that are high school graduates and 45.0% with a bachelor's degree or higher. The average temperature in Petaluma in the summer is 67 degrees, and in the winter 43 degrees.