Tumwater is a city located in Thurston County, Washington. Tumwater has a 2025 population of 28,246 . Tumwater is currently growing at a rate of 1.51% annually and its population has increased by 8.04% since the most recent census, which recorded a population of 26,143 in 2020.
The average household income in Tumwater is $115,276 with a poverty rate of 7.82%. The median age in Tumwater is 38.1 years: 37.8 years for males, and 38.9 years for females. For every 100 females there are 88.1 males.
Data after 2023 is projected based on recent change
The racial composition of Tumwater includes 74.6% White, 4.22% Asian, 3.76% Black or African American, 3.26% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (74.6%)
Two or more races (12.61%)
Asian (4.22%)
Black or African American (3.76%)
Other race (3.26%)
Native American (1.15%)
Native Hawaiian or Pacific Islander (0.41%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 19,782 | 74.6% |
| Two or more races | 3,343 | 12.61% |
| Asian | 1,120 | 4.22% |
| Black or African American | 997 | 3.76% |
| Other race | 864 | 3.26% |
| Native American | 304 | 1.15% |
| Native Hawaiian or Pacific Islander | 109 | 0.41% |
Married
Widowed
Divorced
Separated
Never Married
Tumwater's average per capita income is $60,369. Household income levels show a median of $93,635. The poverty rate stands at 7.82%.
Name | Median | Mean |
|---|---|---|
| Married Families | $127,461 | - |
| Families | $112,913 | $127,761 |
| Households | $93,635 | $115,276 |
| Non Families | $61,551 | $89,710 |
Average Income
Median Household Income
Poverty Rate