Twin Brooks township Flag

Twin Brooks township

County:
Grant County
County Seat:
No
Area (mi²):
36.365
State:
South Dakota

Twin Brooks township is located in Grant County, South Dakota. Twin Brooks township has a 2026 population of 90. Twin Brooks township is currently declining at a rate of -1.1% annually and its population has decreased by -1.1% since the most recent census, which recorded a population of 91 in 2020.

The median household income in Twin Brooks township is $138,500 with a poverty rate of 25.81%. The median age in Twin Brooks township is 52.9 years: 52.8 years for males, and 65.5 years for females. For every 100 females there are 138.5 males.

90
Total Population
2.5
Density (mi²)
-1 -1.1%
Growth

Twin Brooks township Population

Twin Brooks township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202690-1-1.1%
202591-1-1.09%
202492-1-1.08%
20239333.33%
20229000%
202190-1-1.1%
20209100%
20198100%
20188111.25%
201780-1-1.23%
20168100%
20158100%
201481-1-1.22%
20138222.5%
20128000%
20118000%
20108000%

Median Age

Overall: 52.9 years
Female: 65.5 years
Male: 52.8 years

Twin Brooks township Adults

There are 26 adults, (15 of whom are seniors) in Twin Brooks township.

Sex Ratio

Female: 13 (41.9%)
Male: 18 (58.1%)

Demographics

The racial composition of Twin Brooks township includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White31100%
Race
Population ↓
Percentage (of total)
White31100%

Twin Brooks township Marital Status

Economics and Income Statistics

Twin Brooks township 's average per capita income is $0. Household income levels show a median of $138,500. The poverty rate stands at 25.81%.

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$138,500$378,358
Families$138,500$378,358
Married Families$138,500-
Non Families--

$0

Average Income

$138,500

Median Household Income

25.81%

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)