Eureka township Flag

Eureka township

County Seat:
No
Area (mi²):
34.308
State:
South Dakota

Eureka township is located in McPherson County, South Dakota. Eureka township has a 2026 population of 37. Eureka township is currently declining at a rate of -2.63% annually and its population has decreased by -7.5% since the most recent census, which recorded a population of 40 in 2020.

The median age in Eureka township is 77.7 years: 0 years for males, and 0 years for females. For every 100 females there are 166.7 males.

37
Total Population
1.1
Density (mi²)
-1 -2.63%
Growth

Eureka township Population

Eureka township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202637-1-2.63%
202538-1-2.56%
202439-1-2.5%
20234000%
20224000%
20214000%
20204000%
201939-1-2.5%
20184000%
20174025.26%
20163800%
20153800%
20143812.7%
201337-1-2.63%
20123800%
20113800%
20103800%

Median Age

Overall: 77.7 years
Female: 0 years
Male: 0 years

Eureka township Adults

There are 8 adults, (8 of whom are seniors) in Eureka township.

Sex Ratio

Female: 3 (37.5%)
Male: 5 (62.5%)

Demographics

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

Population by Race

Race
Population ↓
Percentage (of total)
White8100%
Race
Population ↓
Percentage (of total)
White8100%

Eureka 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)