Star Valley Ranch
- County:
- Caribou County
- County Seat:
- No
- Area (mi²):
- 2.715
- State:
- Wyoming
Star Valley Ranch is a town located in Caribou County, Idaho and Lincoln County, Wyoming. Star Valley Ranch has a 2026 population of 2,041. Star Valley Ranch is currently declining at a rate of -0.24% annually but its population has increased by 8.85% since the most recent census, which recorded a population of 1,875 in 2020.