
Eureka township
- County:
- McPherson County
- County Seat:
- No
- Area (mi²):
- 34.308
- State:
- South Dakota
Eureka township is located in McPherson County, South Dakota. Eureka township has a 2025 population of 41. Eureka 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 41 in 2020.
The average household income in Eureka township is -$1000.00 Mn with a poverty rate of 0%. The median age in Eureka township is 77.7 years: 0 years for males, and 0 years for females.