Timber Lake Flag

Timber Lake

County:
Dewey County
County Seat:
Yes
Area (mi²):
0.611
State:
South Dakota

Timber Lake is a city located in Dewey County, South Dakota. Timber Lake has a 2026 population of 549. It is also the county seat of Dewey County. Timber Lake is currently growing at a rate of 1.1% annually and its population has increased by 7.23% since the most recent census, which recorded a population of 512 in 2020.

The median household income in Timber Lake is $60,694 with a poverty rate of 15.78%. The median age in Timber Lake is 23.8 years: 23.3 years for males, and 27.1 years for females. For every 100 females there are 103.9 males.

549
Total Population
899
Density (mi²)
6 1.1%
Growth

Timber Lake Population

Timber Lake Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202654961.1%
202554361.12%
2024537224.27%
2023515183.62%
2022497-14-2.74%
2021511-1-0.2%
2020512-2-0.39%
2019498-3-0.6%
201850120.4%
201749961.22%
2016493102.07%
201548361.26%
201447781.71%
201346981.74%
2012461112.44%
201145071.58%
201044520.45%

Median Age

Overall: 23.8 years
Female: 27.1 years
Male: 23.3 years

Timber Lake Adults

There are 447 adults, (53 of whom are seniors) in Timber Lake.

Sex Ratio

Female: 382 (49%)
Male: 397 (51%)

Demographics

The racial composition of Timber Lake includes 48.14% White, 41.59% Native American, and smaller percentages for Black or African American, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White37548.14%
Native American32441.59%
Two or more races719.11%
Black or African American60.77%
Asian30.39%
Race
Population ↓
Percentage (of total)
Native American121.54%
Race
Population ↓
Percentage (of total)
White37548.14%
Native American31240.05%
Two or more races719.11%
Black or African American60.77%
Asian30.39%

Timber Lake Marital Status

Economics and Income Statistics

Timber Lake 's average per capita income is $43,125. Household income levels show a median of $60,694. The poverty rate stands at 15.78%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$108,438-
Families$67,188$94,201
Households$60,694$73,800
Non Families$32,404$39,790

$43,125

Average Income

$60,694

Median Household Income

15.78%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)