Greenfield township Flag

Greenfield township

County:
Brown County
County Seat:
No
Area (mi²):
32.595
State:
South Dakota

Greenfield township is located in Brown County, South Dakota. Greenfield township has a 2026 population of 36. Greenfield township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 36 in 2020.

The median age in Greenfield township is 12.8 years: 39.1 years for males, and 12.5 years for females. For every 100 females there are 76.5 males.

36
Total Population
1.1
Density (mi²)

Greenfield township Population

Greenfield township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20263600%
20253600%
20243600%
202336-1-2.7%
20223700%
20213712.78%
20203600%
20194100%
201841-1-2.38%
20174212.44%
20164100%
20154100%
201441-1-2.38%
20134225%
20124000%
20114000%
20104000%

Median Age

Overall: 12.8 years
Female: 12.5 years
Male: 39.1 years

Greenfield township Adults

There are 113 adults, (0 of whom are seniors) in Greenfield township.

Sex Ratio

Female: 153 (56.7%)
Male: 117 (43.3%)

Demographics

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

Population by Race

Race
Population ↓
Percentage (of total)
White270100%
Race
Population ↓
Percentage (of total)
White270100%

Greenfield township 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)