Waterville is a city located in Kansas. With a 2020 population of 629, it is the 253rd largest city in Kansas and the 12341st largest city in the United States. Waterville is currently declining at a rate of -0.79% annually and its population has decreased by -7.50% since the most recent census, which recorded a population of 680 in 2010. Waterville reached it's highest population of 681 in 2010. Spanning over 1 miles, Waterville has a population density of 1,279 people per square mile.
The average household income in Waterville is $65,132 with a poverty rate of 10.09%. The median rental costs in recent years comes to $625 per month, and the median house value is $75,200. The median age in Waterville is 40.5 years, 44.5 years for males, and 38.3 years for females. For every 100 females there are 91.0 males.