Rochester is located in Thurston county Washington with a geographic area of 8.5 square miles. The total population in Rochester is 4,854 with 55.0% male and 45.0% female. Children under age 5 represent 6.1% of the population, under age 18 equal 21.7% of the population and over age 65 is 19.0% of the population. The median household income is $79,682, per capita income is $34,406. There are a total of 2,030 housing units with 84.3% owner occupied. Education includes 34.0% of residents that are high school graduates and 26.7% with a bachelor's degree or higher. The average temperature in Rochester in the summer is 60 degrees, and in the winter 42 degrees.
