Oak Lake Flag

Oak Lake

County Seat:
No
Area (mi²):
35.805
State:
South Dakota

Oak Lake is located in Brookings County, South Dakota. Oak Lake has a 2025 population of 99 . Oak Lake is currently growing at a rate of 1.02% annually and its population has increased by 6.45% since the most recent census, which recorded a population of 93 in 2020.

The average household income in Oak Lake is $140,704 with a poverty rate of 0%. The median age in Oak Lake is 48.5 years: 48.6 years for males, and 47.5 years for females. For every 100 females there are 121.7 males.

99
Total Population
3
Density (mi²)
1 1.02%
Growth

Oak Lake Population

Oak Lake Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Oak Lake includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

White (100%)

Race
Population
Percentage (of total)
White184100%

Oak Lake Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Oak Lake's average per capita income is $62,813. Household income levels show a median of $123,676. The poverty rate stands at 0%.

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
Families$124,265$150,642
Married Families$124,265-
Households$123,676$140,704
Non Families--

$62,813

Average Income

$123,676

Median Household Income

0%

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)