Grantsville township
- County:
- Linn County
- County Seat:
- No
- Area (mi²):
- 46.016
- State:
- Missouri
Grantsville township is located in Linn County, Missouri. Grantsville township has a 2026 population of 261. Grantsville township is currently growing at a rate of 1.16% annually and its population has increased by 0.77% since the most recent census, which recorded a population of 259 in 2020.
The median household income in Grantsville township is $59,375 with a poverty rate of 0%. The median age in Grantsville township is 30.5 years: 31.6 years for males, and 16.7 years for females. For every 100 females there are 123.7 males.