Clay Center is a city located in Kansas. With a 2020 population of 3,887, it is the 74th largest city in Kansas and the 5481st largest city in the United States. Clay Center is currently declining at a rate of -1.30% annually and its population has decreased by -10.31% since the most recent census, which recorded a population of 4,334 in 2010. Clay Center reached it's highest population of 4,963 in 1970. Spanning over 3 miles, Clay Center has a population density of 1,221 people per square mile.
The average household income in Clay Center is $60,467 with a poverty rate of 7.61%. The median rental costs in recent years comes to $613 per month, and the median house value is $82,400. The median age in Clay Center is 42.6 years, 38.1 years for males, and 53.2 years for females. For every 100 females there are 92.5 males.