Southern Oregon is a region of the U.S. state of Oregon south of Lane County and generally west of the Cascade Range, excluding the southern Oregon Coast. Counties include Douglas, Jackson, Klamath, and Josephine. It includes the Southern Oregon American Viticultural Area, which consists of the Umpqua and Rogue River drainages. As of 2015, the population in the four counties is about 471,000, and in the greater, seven-county definition, it is about 564,000. Counties Always included: Jackson County: population 212,567 Douglas County: population 107,685 Josephine County: population 84,745 Klamath County: population 66,016 Total population: 471,013 Sometimes included: Coos County: population 63,121 Curry County: population 22,483 Lake County: population 7,829 Total seven-county population: 564,446 Cities Politics Southern Oregon generally supports candidates of the Republican Party in both state and federal elections; other than Jackson County, which is considered a swing county largely due to Ashland, no Democrat has won any county of Southern Oregon in presidential elections since 1996 using the seven-county definition, or since 1964 using the four-county definition. Josephine County has not supported a Democrat for president since 1936. See also Southern Oregon Land Conservancy Southeastern Oregon References Regions of Oregon