Weldon spring is located in St. charles county Missouri with a geographic area of 7.6 square miles. The total population in Weldon spring is 5,536 with 49.8% male and 50.2% female. Children under age 5 represent 2.1% of the population, under age 18 equal 15.3% of the population and over age 65 is 27.7% of the population. The median household income is $117,297, per capita income is $62,428. There are a total of 2,267 housing units with 90.9% owner occupied. Education includes 13.6% of residents that are high school graduates and 59.1% with a bachelor's degree or higher. The average temperature in Weldon spring in the summer is 77 degrees, and in the winter 32 degrees.
