Washington County's 2026 population is estimated at 39,739, reflecting a -1.78% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Washington County is the 18th largest county in Mississippi. The 2010 population was 51,098 and has grown -22.23% since 2010.
Data after 2023 is projected based on recent change
Overall: 38 years
Female: 40 years
Male: 36 years
There are 31,804 adults, (7,621 of whom are seniors) in Washington County.
Female: 22,822 (53.4%)
Male: 19,943 (46.6%)
The racial composition of Washington County includes 71.55% Black or African American, 23.89% White, and smaller percentages for Two or more races, other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| Black or African American | 30,599 | 71.55% |
| White | 10,216 | 23.89% |
| Two or more races | 1,013 | 2.37% |
| Other race | 580 | 1.36% |
| Asian | 338 | 0.79% |
| Native American | 18 | 0.04% |
| Native Hawaiian or Pacific Islander | 1 | 0% |
Washington County 's average per capita income is $39,231. Household income levels show a median of $42,165. The poverty rate stands at 26.45%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $72,634 | - |
| Families | $53,425 | $72,532 |
| Households | $42,165 | $60,222 |
| Non Families | $27,826 | $40,711 |
Average Income
Median Household Income
Poverty Rate