Ruch is an unincorporated community and census-designated place (CDP) in Jackson County, Oregon, United States. It is located on Oregon Route 238, southeast of Grants Pass. As of the 2010 census it had a population of 840. Ruch was named for Casper M. Ruch, who bought a tract of land where the community now stands in 1896. He built a blacksmith shop, a store and a house. When he was appointed postmaster of the new post office in 1897 and allowed to name it, he named it after himself. The post office closed in 1939. The Applegate River runs through the southwest edge of the valley.