Groton township Flag

Groton township

County:
Brown County
County Seat:
No
Area (mi²):
46.255
State:
South Dakota

Groton township is located in Brown County, South Dakota. Groton township has a 2026 population of 125. Groton township is currently declining at a rate of -0.79% annually and its population has decreased by -3.85% since the most recent census, which recorded a population of 130 in 2020.

The median household income in Groton township is $103,718 with a poverty rate of 0%. The median age in Groton township is 64.6 years: 64.5 years for males, and 0 years for females. For every 100 females there are 653.8 males.

125
Total Population
2.7
Density (mi²)
-1 -0.79%
Growth

Groton township Population

Groton township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026125-1-0.79%
2025126-1-0.79%
2024127-1-0.78%
2023128-3-2.29%
2022131-1-0.76%
202113221.54%
2020130-1-0.76%
201912210.83%
2018121-2-1.63%
201712310.82%
201612210.83%
201512100%
201412100%
201312100%
201212110.83%
201112021.69%
201011800%

Median Age

Overall: 64.6 years
Female: 0 years
Male: 64.5 years

Groton township Adults

There are 98 adults, (46 of whom are seniors) in Groton township.

Sex Ratio

Female: 13 (13.3%)
Male: 85 (86.7%)

Demographics

The racial composition of Groton township includes 86.73% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White8586.73%
Two or more races1313.27%
Race
Population ↓
Percentage (of total)
White8586.73%
Two or more races1313.27%

Groton township Marital Status

Economics and Income Statistics

Groton township 's average per capita income is $81,282. Household income levels show a median of $103,718. 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$103,718$109,322
Families$103,718$109,322
Married Families--
Non Families--

$81,282

Average Income

$103,718

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)