Weldon Spring Heights is a small village in St. Charles County, Missouri, United States, approximately 30 miles west of St.

Weldon Spring Heights is located approximately 30 miles west of St. Louis and accessible via Missouri State Route 94.

[4] The United States Census Bureau reports the village has a total area of 0.09 square miles (0.23 km2) all of which is land.

Individuals made up 2.9% of all households, with an equal percentage having a resident who was 65 or older living alone.

The census[2] of 2000 reported 79 residents, consisting of 32 households, and 27 families in the town.

No families and 4.9% of the population lived below the poverty line, including no one under eighteen, and 8.0% of those over 64.