Jefferson is located in Marion county Oregon with a geographic area of 0.9 square miles. The total population in Jefferson is 3,348 with 49.0% male and 51.0% female. Children under age 5 represent 5.3% of the population, under age 18 equal 26.4% of the population and over age 65 is 11.3% of the population. The median household income is $66,208, per capita income is $23,881. There are a total of 1,005 housing units with 71.9% owner occupied. Education includes 27.9% of residents that are high school graduates and 16.8% with a bachelor's degree or higher. The average temperature in Jefferson in the summer is 65 degrees, and in the winter 35 degrees.
