Eureka township
- County:
- Greenwood County
- County Seat:
- No
- Area (mi²):
- 57.609
- State:
- Kansas
Eureka township is located in Greenwood County, Kansas. Eureka township has a 2026 population of 361. Eureka township is currently declining at a rate of -0.55% annually and its population has decreased by -0.82% since the most recent census, which recorded a population of 364 in 2020.
The median household income in Eureka township is $69,007 with a poverty rate of 0%. The median age in Eureka township is 55 years: 53.6 years for males, and 63.3 years for females. For every 100 females there are 136.0 males.