Waterville is a city located in Marshall County Kansas. Waterville has a 2020 population of 746. Waterville is currently declining at a rate of -0.40% annually and its population has decreased by -7.33% since the most recent census, which recorded a population of 805 in 2010. Waterville reached it's highest population of 805 in 2010.
The average household income in Waterville is $69,698 with a poverty rate of 8.84%. The median rental costs in recent years comes to $610 per month, and the median house value is $88,700. The median age in Waterville is 46.5 years, 46.8 years for males, and 45.9 years for females.