Clayton is a city located in Missouri. With a 2020 population of 17,162, it is the 43rd largest city in Missouri and the 2088th largest city in the United States. Clayton is currently growing at a rate of 0.99% annually and its population has increased by 7.67% since the most recent census, which recorded a population of 15,939 in 2010. Spanning over 3 miles, Clayton has a population density of 6,843 people per square mile.
The average household income in Clayton is $183,118 with a poverty rate of 7.25%. The median rental costs in recent years comes to $1,196 per month, and the median house value is $630,400. The median age in Clayton is 31.2 years, 31.5 years for males, and 30.9 years for females. For every 100 females there are 99.0 males.