Weldon Spring is a city in St. Charles County, Missouri, United States. The population was 5,326 at the 2020 census.
History
Weldon Spring was platted in 1864. The community took its name from a spring of the same name near the original town site.
In 1941, the United States Army purchased 17,000 acres of land in the surrounding area. The Weldon Spring Ordnance Works built the largest explosives factory in the United States on the site. It was built to produce TNT and DNT for Allied forces during World War II. It closed on August 15, 1945, days after the end of the war. Most of the land was then sold.
A proposal appeared in 1945 suggesting the placement of United Nations Headquarters in the area.
In 1955, the United States Atomic Energy Commission built a uranium ore processing plant on the 2,000 remaining acres.
Climate
Demographics
2020 census
As of the 2020 census, Weldon Spring had a population of 5,326. The median age was 53.1 years. 18.0% of residents were under the age of 18 and 27.3% of residents were 65 years of age or older. For every 100 females there were 95.2 males, and for every 100 females age 18 and over there were 93.6 males age 18 and over.
90.2% of residents lived in urban areas, while 9.8% lived in rural areas.
There were 2,087 households in Weldon Spring, of which 25.3% had children under the age of 18 living in them. Of all households, 70.5% were married-couple households, 9.3% were households with a male householder and no spouse or partner present, and 17.6% were households with a female householder and no spouse or partner present. About 20.5% of all households were made up of individuals and 15.3% had someone living alone who was 65 years of age or older.
There were 2,050 households, of which 30.8% had children under the age of 18 living with them, 70.9% were married couples living together, 4.0% had a female householder with no husband present, 2.1% had a male householder with no wife present, and 22.9% were non-families. 20.5% of all households were made up of individuals, and 13.3% had someone living alone who was 65 years of age or older. The average household size was 2.59 and the average family size was 3.01.
The median age in the city was 48.7 years. 22.5% of residents were under the age of 18; 6.1% were between the ages of 18 and 24; 14.8% were from 25 to 44; 36.7% were from 45 to 64; and 20.1% were 65 years of age or older. The gender makeup of the city was 47.6% male and 52.4% female.
2000 census
As of the census and the municipality houses two public schools. The Independence Elementary School and Mary Emily Bryan Middle School are located in the city. The only private/parochial school within city limits is the Messiah Lutheran School. Other area options include: Catholic Parish Schools such as St. Joseph's of Cottleville; also, many parents choose to educate their children in Catholic primary schools (Academy of the Sacred Heart, Visitation Academy, Priory, and St. Peters School are the biggest ones) and Catholic secondary education (Cor Jesu Academy, Nerinx Hall, Ursuline Academy, Visitation Academy, Villa Duchesne and Oak Hill School, Incarnate Word Academy, Chaminade Academy, Christian Brothers College (CBC) High School, De Smet Jesuit High School, St. Louis University High School (SLUH), and Duchesne Academy are the most popular).