Southern Oregon

Southern Oregon is a region of Oregon in the USA, it consists of 4 counties plus another 3 which are sometimes considered a part of it and is located west of the Cascade Range. As of 2015 it had a population of 471,000, 564,000 including all 7 counties.
Counties.
Always included:
Total population: 471,013
Sometimes included:
Total seven-county population: 564,446