Greybull
- County:
- Big Horn County
- County Seat:
- No
- Area (mi²):
- 2.214
- State:
- Wyoming
Greybull is a town located in Big Horn County, Wyoming. Greybull has a 2026 population of 1,715. Greybull is currently declining at a rate of -0.06% annually but its population has increased by 4.32% since the most recent census, which recorded a population of 1,644 in 2020.