Columbia is located in Adair county Kentucky with a geographic area of 4.8 square miles. The total population in Columbia is 4,748 with 50.5% male and 49.5% female. Children under age 5 represent 5.6% of the population, under age 18 equal 16.7% of the population and over age 65 is 15.8% of the population. The median household income is $41,821, per capita income is $22,413. There are a total of 1,565 housing units with 41.8% owner occupied. Education includes 25.7% of residents that are high school graduates and 30.8% with a bachelor's degree or higher. The average temperature in Columbia in the summer is 76 degrees, and in the winter 36 degrees.
