Lake Flat township Flag

Lake Flat township

County Seat:
No
Area (mi²):
34.431
State:
South Dakota

Lake Flat township is located in Pennington County, South Dakota. Lake Flat township has a 2026 population of 30. Lake Flat township is currently declining at a rate of -3.23% annually and its population has decreased by -6.25% since the most recent census, which recorded a population of 32 in 2020.

The median household income in Lake Flat township is $111,042 with a poverty rate of 0%. The median age in Lake Flat township is 15.7 years: 15.3 years for males, and 25.6 years for females. For every 100 females there are 160.9 males.

30
Total Population
0.87
Density (mi²)
-1 -3.23%
Growth

Lake Flat township Population

Lake Flat township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202630-1-3.23%
202531-1-3.13%
202432-1-3.03%
20233313.13%
20223200%
20213200%
20203200%
20193800%
20183812.7%
20173700%
201637-1-2.63%
20153800%
20143825.56%
20133600%
20123612.86%
20113500%
20103500%

Median Age

Overall: 15.7 years
Female: 25.6 years
Male: 15.3 years

Lake Flat township Adults

There are 28 adults, (9 of whom are seniors) in Lake Flat township.

Sex Ratio

Female: 23 (38.3%)
Male: 37 (61.7%)

Demographics

The racial composition of Lake Flat township includes 95% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White5795%
Two or more races35%
Race
Population ↓
Percentage (of total)
White5795%
Two or more races35%

Lake Flat township Marital Status

Economics and Income Statistics

Lake Flat township 's average per capita income is $66,250. Household income levels show a median of $111,042. 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
Households$111,042$113,553
Families$111,042$113,553
Married Families$111,042-
Non Families--

$66,250

Average Income

$111,042

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)