Timber Lake is a city located in Dewey County, South Dakota. Timber Lake has a 2025 population of 543 . Timber Lake is currently growing at a rate of 1.12% annually and its population has increased by 6.05% since the most recent census, which recorded a population of 512 in 2020.
The average household income in Timber Lake is $70,358 with a poverty rate of 18.06%. The median age in Timber Lake is 27.4 years: 25 years for males, and 30.4 years for females. For every 100 females there are 92.3 males.
Data after 2023 is projected based on recent change
The racial composition of Timber Lake includes 46.53% White, 45.64% Native American, and smaller percentages for Black or African American, Asian, other race and multiracial populations.
White (46.53%)
Native American (45.64%)
Two or more races (6.2%)
Black or African American (0.89%)
Asian (0.44%)
Other race (0.3%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 315 | 46.53% |
| Native American | 309 | 45.64% |
| Two or more races | 42 | 6.2% |
| Black or African American | 6 | 0.89% |
| Asian | 3 | 0.44% |
| Other race | 2 | 0.3% |
Married
Widowed
Divorced
Separated
Never Married
Timber Lake's average per capita income is $39,063. Household income levels show a median of $58,000. The poverty rate stands at 18.06%.
Name | Median | Mean |
|---|---|---|
| Married Families | $112,917 | - |
| Families | $62,857 | $83,867 |
| Households | $58,000 | $70,358 |
| Non Families | $33,750 | $39,378 |
Average Income
Median Household Income
Poverty Rate