The first step in finding Amtrak stations in Oregon is understanding the regional geography. Oregon is divided into several geographic regions: the Oregon Coast, the Willamette Valley, Central Oregon, Southern Oregon, Eastern Oregon, and the Portland Metro area. Most Amtrak stations are concentrated along the western corridor of the state, which follows the I-5 highway and includes cities such as Portland, Salem, Albany, and Eugene. This area is not only the most populated but also the most frequently served by Amtrak.