Eureka township
- County:
- Ward County
- County Seat:
- No
- Area (mi²):
- 35.922
- State:
- North Dakota
Eureka township is located in Ward County, North Dakota. Eureka township has a 2026 population of 375. Eureka township is currently declining at a rate of -0.27% annually and its population has decreased by -3.6% since the most recent census, which recorded a population of 389 in 2020.
The median age in Eureka township is 39 years: 37.9 years for males, and 46 years for females. For every 100 females there are 62.7 males.