The station is still currently in use, and offers a number of agricultural education programs. Prosser at one point had three newspapers, which were consolidated in the 1920s into the Prosser "Record-Bulletin", and a permanent courthouse was built in 1926. The Benton County Historical Museum was dedicated in 1968. In more recent years, Prosser's location on a major river (the Yakima) and highway access has encouraged a growing wine business and associated tourist industry. Several Prosser wineries are located within the Yakima Valley appellation. Prosser is located near the eastern end of the Yakima Valley at (46.206921, -119.765612). It is 665 ft above sea level. One river, the Yakima River, runs through it. According to the United States Census Bureau, the city has a total area of , of which, is land and is water. The former community of Kinneyville is now a neighborhood fully contained within Prosser. Prosser experiences a semi-arid climate (Köppen "BSk"). The median age was 32 years old. The median house value was $98,500 (2000). For population 15 years and over in Prosser city   For population 20 years and over in Prosser:   As of the census of 2010, there were 5,714 people, 2,023 households, and 1,396 families residing in the city. The population density was . There were 2,129 housing units at an average density of . The racial makeup of the city was 76.1% White, 0.5% African American, 0.5% Native American, 2.0% Asian, 0.1% Pacific Islander, 17.6% from other races, and 3.2% from two or more races. Hispanic or Latino of any race were 37.2% of the population. There were 2,023 households of which 39.8% had children under the age of 18 living with them, 49.3% were married couples living together, 14.2% had a female householder with no husband present, 5.4% had a male householder with no wife present, and 31.0% were non-families. 27.3% of all households were made up of individuals and 13.8% had someone living alone who was 65 years of age or older. The average household size was 2.80 and the average family size was 3.42.