Wilbur is an unincorporated community in Douglas County, Oregon, United States. Wilbur is located along Interstate 5 and Oregon Route 99 north of Winchester. It was originally named Bunton's Gap, but the town was renamed Wilbur after James H. Wilbur. Wilbur started a school on his own land in Bunton's Gap in 1854; in 1857, under the name Umpqua, the …Wilbur is an unincorporated community in Douglas County, Oregon, United States. Wilbur is located along Interstate 5 and Oregon Route 99 north of Winchester. It was originally named Bunton's Gap, but the town was renamed Wilbur after James H. Wilbur. Wilbur started a school on his own land in Bunton's Gap in 1854; in 1857, under the name Umpqua, the college was chartered by the Oregon Territorial Legislature and also affiliated with the Methodist Church. A new two-story school was built, and Wilbur deeded his land to the academy's trustees.