Mckinleyville is located in Humboldt county California with a geographic area of 20.9 square miles. The total population in Mckinleyville is 16,645 with 50.3% male and 49.7% female. Children under age 5 represent 8.9% of the population, under age 18 equal 23.5% of the population and over age 65 is 15.3% of the population. The median household income is $54,697, per capita income is $28,543. There are a total of 6,442 housing units with 64.1% owner occupied. Education includes 17.6% of residents that are high school graduates and 32.6% with a bachelor's degree or higher. The average temperature in Mckinleyville in the summer is 76 degrees, and in the winter 43 degrees.
