Prosser is a city located in Washington. With a 2020 population of 6,478, it is the 114th largest city in Washington and the 4138th largest city in the United States. Prosser is currently growing at a rate of 0.76% annually and its population has increased by 13.37% since the most recent census, which recorded a population of 5,714 in 2010. Prosser reached it's highest population of 6,478 in 2021. Spanning over 5 miles, Prosser has a population density of 1,395 people per square mile.
The average household income in Prosser is $57,745 with a poverty rate of 18.09%. The median rental costs in recent years comes to $835 per month, and the median house value is $182,900. The median age in Prosser is 37.2 years, 33.9 years for males, and 43.1 years for females. For every 100 females there are 90.4 males.