Waterville is a city located in Washington. With a 2020 population of 1,245, it is the 191st largest city in Washington and the 9428th largest city in the United States. Waterville is currently growing at a rate of 1.30% annually and its population has increased by 9.40% since the most recent census, which recorded a population of 1,138 in 2010. Spanning over 1 miles, Waterville has a population density of 1,439 people per square mile.
The average household income in Waterville is $63,099 with a poverty rate of 2.79%. The median rental costs in recent years comes to $717 per month, and the median house value is $167,300. The median age in Waterville is 45.7 years, 43.4 years for males, and 50.7 years for females. For every 100 females there are 111.8 males.