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About Smithville
Smithville is located in Clay county Missouri with a geographic area of 16.0 square miles. The total population in Smithville is 10,269 with 46.4% male and 53.6% female. Children under age 5 represent 9.2% of the population, under age 18 equal 26.9% of the population and over age 65 is 13.9% of the population. The median household income is $83,400, per capita income is $32,342. There are a total of 3,647 housing units with 86.2% owner occupied. Education includes 28.9% of residents that are high school graduates and 31.0% with a bachelor's degree or higher. The average temperature in Smithville in the summer is 75 degrees, and in the winter 32 degrees.