Big Rock
- County:
- Scott County
- County Seat:
- No
- Area (mi²):
- 0.33
- State:
- Iowa
Big Rock is a CDP located in Scott County, Iowa. Big Rock has a 2025 population of 15. Big Rock is currently growing at a rate of 7.14% annually but its population has decreased by -55.88% since the most recent census, which recorded a population of 34 in 2020.
The median age in Big Rock is 62.1 years: 0 years for males, and 0 years for females.