New Fork is a ghost town in Sublette County, Wyoming, United States, near Boulder. It was one of the earliest settlements in the upper Green River valley. New Fork was established in 1888 by John Vible and Louis Broderson, Danish immigrants who had arrived in the United States in 1884. They established a store along the Lander cut-off of the Oregon Trail. By 1908 a small town had grown around the store, and in 1910 Vible built a dance hall, called The Valhalla. Several log and frame buildings remain in the townsite.