
Barstow
- County:
- Rock Island County
- County Seat:
- No
- Area (mi²):
- 0.106
- State:
- Illinois
Barstow is a CDP located in Rock Island County, Illinois. Barstow has a 2025 population of 81. Barstow is currently growing at a rate of 6.58% annually and its population has increased by 10.96% since the most recent census, which recorded a population of 73 in 2020.
The average household income in Barstow is $78,671 with a poverty rate of 0%. The median age in Barstow is 36.6 years: 36.9 years for males, and 34.7 years for females.