Washington County's estimated 2026 population is 142,824 with a growth rate of 1.15% in the past year according to the most recent United States census data. Washington County is the 12th largest county in Tennessee. The 2010 population was 123,393 and has seen a growth of 15.75% since that time.
Data after 2023 is projected based on recent change
Overall: 40.2 years
Female: 41.1 years
Male: 38.9 years
There are 110,815 adults, (25,751 of whom are seniors) in Washington County.
Female: 69,189 (50.8%)
Male: 67,072 (49.2%)
The racial composition of Washington County includes 86.77% White, 3.55% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 118,236 | 86.77% |
| Two or more races | 8,685 | 6.37% |
| Black or African American | 4,835 | 3.55% |
| Asian | 2,135 | 1.57% |
| Other race | 2,075 | 1.52% |
| Native American | 259 | 0.19% |
| Native Hawaiian or Pacific Islander | 36 | 0.03% |
Washington County's average per capita income is $45,000. Household income levels show a median of $62,809. The poverty rate stands at 15.54%.
Name | Median | Mean |
|---|---|---|
| Married Families | $92,473 | $120,286 |
| Families | $82,315 | $108,595 |
| Households | $62,809 | $86,311 |
| Non Families | $37,562 | $50,640 |
Average Income
Median Household Income
Poverty Rate