Prosser is a city located in Benton County, Washington. Prosser has a 2025 population of 6,638 . It is also the county seat of Benton County . Prosser is currently growing at a rate of 1.5% annually and its population has increased by 8.01% since the most recent census, which recorded a population of 6,146 in 2020.
The average household income in Prosser is $77,598 with a poverty rate of 20.23%. The median age in Prosser is 33.4 years: 33 years for males, and 34.3 years for females. For every 100 females there are 90.7 males.
Data after 2023 is projected based on recent change
The racial composition of Prosser includes 61.53% White, 12.6% other race, and smaller percentages for Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (61.53%)
Two or more races (21.6%)
Other race (12.6%)
Asian (2.45%)
Black or African American (1.01%)
Native American (0.56%)
Native Hawaiian or Pacific Islander (0.24%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,823 | 61.53% |
| Two or more races | 1,342 | 21.6% |
| Other race | 783 | 12.6% |
| Asian | 152 | 2.45% |
| Black or African American | 63 | 1.01% |
| Native American | 35 | 0.56% |
| Native Hawaiian or Pacific Islander | 15 | 0.24% |
Married
Widowed
Divorced
Separated
Never Married
Prosser's average per capita income is $42,000. Household income levels show a median of $66,406. The poverty rate stands at 20.23%.
Name | Median | Mean |
|---|---|---|
| Married Families | $87,827 | - |
| Families | $68,315 | $85,131 |
| Households | $66,406 | $77,598 |
| Non Families | $36,614 | $49,299 |
Average Income
Median Household Income
Poverty Rate