Plainville is a city located in Rooks County Kansas. With a 2020 population of 1,750, it is the 131st largest city in Kansas and the 8123rd largest city in the United States . Plainville is currently declining at a rate of -1.52% annually and its population has decreased by -8.04% since the most recent census, which recorded a population of 1,903 in 2010. Plainville reached it's highest population of 1,915 in 2012. Spanning over 1 miles, Plainville has a population density of 1,463 people per square mile.
The average household income in Plainville is $67,471 with a poverty rate of 4.83%. The median rental costs in recent years comes to $577 per month, and the median house value is $88,700. The median age in Plainville is 36.1 years, 39.2 years for males, and 32.1 years for females.