Prosser city, Washington (data.census.gov)Prosser city, Washington is a city, town, place equivalent, or township located in Washington. Prosser city, Washington has a land area of 4.6 square miles.
Prosser, Washington (Wikipedia)Prosser (/ˈprɑːsər/) is a city in and the county seat of Benton County, Washington, United States. Situated along the Yakima River, it had a population of 6,062 at the 2020 census.