Weldon Spring is a city located in Missouri. With a 2020 population of 5,573, it is the 124th largest city in Missouri and the 4468th largest city in the United States. Weldon Spring is currently growing at a rate of 0.05% annually and its population has increased by 2.39% since the most recent census, which recorded a population of 5,443 in 2010. Spanning over 8 miles, Weldon Spring has a population density of 728 people per square mile.
The average household income in Weldon Spring is $140,089 with a poverty rate of 2.96%. The median rental costs in recent years comes to $1,734 per month, and the median house value is $383,900. The median age in Weldon Spring is 56.4 years, 55.3 years for males, and 56.8 years for females. For every 100 females there are 89.6 males.