Eureka is located in Humboldt county California with a geographic area of 9.5 square miles. The total population in Eureka is 26,938 with 49.2% male and 50.8% female. Children under age 5 represent 5.4% of the population, under age 18 equal 18.5% of the population and over age 65 is 16.1% of the population. The median household income is $43,199, per capita income is $28,518. There are a total of 11,216 housing units with 44.1% owner occupied. Education includes 19.3% of residents that are high school graduates and 32.1% with a bachelor's degree or higher. The average temperature in Eureka in the summer is 58 degrees, and in the winter 43 degrees.
