Twin Brooks Flag

Twin Brooks

County:
Grant County
County Seat:
No
Area (mi²):
0.406
State:
South Dakota

Twin Brooks is a town located in Grant County, South Dakota. Twin Brooks has a 2026 population of 47. Twin Brooks is currently declining at a rate of 0% annually and its population has increased by 2.17% since the most recent census, which recorded a population of 46 in 2020.

The median age in Twin Brooks is 55.8 years: 54.5 years for males, and 58.5 years for females. For every 100 females there are 141.7 males.

47
Total Population
116
Density (mi²)

Twin Brooks Population

Twin Brooks Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20264700%
20254700%
20244712.17%
20234600%
20224600%
20214600%
20204600%
20196900%
201869-1-1.43%
20177022.94%
20166800%
201568-2-2.86%
20147011.45%
20136900%
20126900%
20116900%
20106900%

Median Age

Overall: 55.8 years
Female: 58.5 years
Male: 54.5 years

Twin Brooks Adults

There are 27 adults, (4 of whom are seniors) in Twin Brooks.

Sex Ratio

Female: 12 (41.4%)
Male: 17 (58.6%)

Demographics

The racial composition of Twin Brooks includes 79.31% White, 17.24% Native American, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White2379.31%
Native American517.24%
Two or more races13.45%
Race
Population ↓
Percentage (of total)
White2379.31%
Native American517.24%
Two or more races13.45%

Twin Brooks Marital Status

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)