Alsea is located in Benton county Oregon with a geographic area of 0.2 square miles. The total population in Alsea is 220 with 50.5% male and 49.5% female. Children under age 5 represent 10.5% of the population, under age 18 equal 43.2% of the population and over age 65 is 9.1% of the population. The median household income is $51,094, per capita income is $17,098. There are a total of 77 housing units with 63.6% owner occupied. Education includes 55.8% of residents that are high school graduates and 3.9% with a bachelor's degree or higher. The average temperature in Alsea in the summer is 68 degrees, and in the winter 35 degrees.