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Welcome To KEY TO THE CITY's Page For
Saint Louis County, Missouri


Page Contents for Clayton, Missouri

Statistics & Facts


History & History-related items

City Attractions


Chamber of Commerce.



Statistics & Facts

The Missouri state capital is Jefferson City.
The population of Clayton is approximately 12,825 (2000), 15939 (2010).
The approximate number of families is 5,800 (1990), 5322 (2010).
The amount of land area in Clayton is 6.398 sq. kilometers.
The amount of land area in Clayton is 2.5 sq. miles.
The amount of surface water is 0 sq kilometers.
The distance from Clayton to Washington DC is 755 miles.
The distance to the Missouri state capital is 105 miles. (as the crow flies)
Clayton is positioned 38.64 degrees north of the equator and 90.32 degrees west of the prime meridian.
Clayton elevation is 570 feet above sea level.
Clayton median income is $ 64,184 (2000).
The Clayton median home price is $ 425,000 (2000).
The average winter temperature is 29.5 degrees F.
The average spring temperature is 56.5 degrees F.
The average summer temperature is 80.3 degrees F.
The average fall temperature is 58.9 degrees F.


about 6.2 miles from St. Louis, Missouri in eastern Missouri. Nearby communities include Richmond Heights, University City, Brentwood, Maplewood, Pagedale, Vinita Terrace, Hanley Hills and Vinita Park.
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History & History Related Items

A history page for Clayton.

Born in Virginia in 1788, Ralph Clayton came to this area during the 1830's. When St. Louis County began to look for a new county seat after the city of St. Louis separated itself from the county, Clayton was able to convince them to use his community rather than Kirkwood or Mount Olive. He also agreed to give his land to the county, only requesting that the area of the new courthouse would be named for him. This is where the name of Clayton came from. On December 4, 1877, county residents voted to adopt Clayton's and Hanley's land as the new county seat. Clayton was a small town with few residents, so businesses in Clayton catered to the people who came in to conduct county business. By 1905, Clayton had its own schools, newspaper, trolley service, volunteer fire department, electric, water and phone lines.

The City of Clayton was formally incorporated in February 1913. William Broadhead was chosen as the first mayor. He was the man who built the first residence in Clayton back in the 1880's.
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The incorporation of Clayton

April 14, 1913


Learn more about Clayton, Missouri
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Clayton City Government

Clayton, Missouri Official City site.
10 N. Berniston Avenue
Clayton, MO 63105
Phone: 314-727-8100
Fax: 314-863-0295

Clayton Chamber

Clayton Chamber of Commerce

Clayton Organizations

Clayton Chamber of Commerce

Clayton Schools

Clayton School District
Administrative Center
#2 Mark Twain Circle
Clayton, Missouri 63105
Phone: (314) 854-6000 Clayton


81% of Clayton's land is dedicated to residential or park use

The population of Clayton was:
1920 - 3,000
1925 - 7,000+
1990 - 13,874
2000 - 12,825

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