Onalaska is located in Polk county Texas with a geographic area of 5.3 square miles. The total population in Onalaska is 2,898 with 46.9% male and 53.1% female. Children under age 5 represent 6.0% of the population, under age 18 equal 26.9% of the population and over age 65 is 17.2% of the population. The median household income is $53,021, per capita income is $22,566. There are a total of 1,232 housing units with 77.9% owner occupied. Education includes 33.8% of residents that are high school graduates and 11.1% with a bachelor's degree or higher. The average temperature in Onalaska in the summer is 81 degrees, and in the winter 49 degrees.
