Grand River
- County:
- Decatur County
- County Seat:
- No
- Area (mi²):
- 0.189
- State:
- Iowa
Grand River is a city located in Decatur County, Iowa. Grand River has a 2026 population of 192. Grand River is currently declining at a rate of -1.54% annually and its population has decreased by -1.54% since the most recent census, which recorded a population of 195 in 2020.
The median household income in Grand River is $40,156 with a poverty rate of 19.28%. The median age in Grand River is 47.5 years: 59.5 years for males, and 45.4 years for females. For every 100 females there are 88.6 males.