About 12,000 people.

Green River sits along its namesake river in southwest Wyoming, framed by tall colorful cliffs. It was the starting point for famous river explorer John Wesley Powell.
You can boat and fish on Flaming Gorge Reservoir, look for fossil fish at the museum, and hike beneath big landmarks like Castle Rock and the Palisades.
The Green River and nearby Flaming Gorge give families lots of water fun, from floating in a boat to fishing for big trout.
Tall striped rock formations like Castle Rock rise right over town and glow orange and gold when the sun sets.