Eureka township
- County:
- Greenwood County
- County Seat:
- No
- Area (mi²):
- 35.876
- State:
- Kansas
Eureka township is located in Greenwood County, Kansas. Eureka township has a 2026 population of 86. Eureka township is currently declining at a rate of -3.37% annually and its population has decreased by -5.49% since the most recent census, which recorded a population of 91 in 2020.
The median household income in Eureka township is $56,563 with a poverty rate of 4.35%. The median age in Eureka township is 55.7 years: 55 years for males, and 64.6 years for females. For every 100 females there are 102.9 males.