1877History
Organized in 1877, the city was named after Ralph Clayton, a citizen who donated the land for the St.
1904Education
Forsyth Boulevard (which changes to Old Bonhomme between North Clayton and University City) was at one time an ancient Native American trail and was part of the route of the 190...
2000History
=== 2000 census ===
As of the census of 2000, there were 12,825 people, 5,370 households, and 2,797 families living in the city.
2007Education
In 2007, Washington University acquired the former home of Christian Brothers College High School in the DeMun neighborhood.
2010History
=== 2010 census ===
As of the census of 2010, there were 15,939 people, 5,322 households, and 2,921 families living in the city.
2016History
The 2016–2020 5-year American Community Survey estimates show that the median household income was $108,387 (with a margin of error of +/- $9,440) and the median family income w...
2017Architecture
Recently, the neighborhood has entered a period of significant redevelopment and new construction with the opening of the Two Twelve Clayton and Ceylon apartment buildings in 20...
2020History
=== 2020 census ===
The 2020 United States census counted 17,355 people, 5,587 households, and 3,275 families in Clayton.
2021History
In 2021 the district's enrollment was 2,412 students.
2022Architecture
As of 2022, downtown Clayton had seven projects, worth approximately $600 million, either in development or under construction.
2024History
The unemployment rate in 2024 was 3%.
2025Education
Previously, the city was home to Fontbonne University until it shuttered at the end of the 2025 academic year.