The Confederated Tribes of the Grand Ronde Community of Oregon (CTGR) consists of twenty-seven Native American tribes with long historical ties to present-day Western Oregon between the western boundary of the Oregon Coast and the eastern boundary of the Cascade Range, and the northern boundary of southwestern Washington and the southern boundary of Northern California. The community has an 11,040-acre (45 km²) Indian reservation, the Grand Ronde Indian Reservation, located in Yamhill and Polk counties.