Waterville is located in Douglas County. About 1,134 people live here (as of 2020). Between 2010 and 2020, the population declined from 1,163 to 1,134. The area covers about 2.2 square kilometers. There are about 102 streets in Waterville. The region was founded in 1883. The postal codes are 98858. The dialing code is 509. Waterville is town in and the county seat of Douglas County, Washington, United States. Among other things, Waterville has public Transport, hotels, restaurants, supermarkets, museums, schools, banks and doctors. More information at
www.ci.waterville.wa.us.