Sydna township
- County:
- Ransom County
- County Seat:
- No
- Area (mi²):
- 36.329
- State:
- North Dakota
Sydna township is located in Ransom County, North Dakota. Sydna township has a 2026 population of 383. Sydna township is currently declining at a rate of -0.26% annually and its population has decreased by -1.03% since the most recent census, which recorded a population of 387 in 2020.
The median age in Sydna township is 35.3 years: 35.2 years for males, and 0 years for females. For every 100 females there are 1800.0 males.