Spirit Mountain Casino (Oregon)

Valley Junction is an unincorporated community in Polk County, Oregon, United States. It is located at the junction of Oregon Route 18 and Oregon Route 22, on the South Yamhill River east of Grand Ronde. A now-abandoned section of the Willamina and Grand Ronde Railway short line passed through Valley Junction. The Fort Yamhill State Heritage Area and Spirit Mountain Casino are nearby.

Fort Yamhill was an American military fortification in the state of Oregon. Built in 1856 in the Oregon Territory, it remained an active post until 1866. The Army outpost was used to provide a presence next to the Grand Ronde Agency Coastal Reservation. Several officers stationed at the United States Army post prior to the American Civil War would later serve as generals in that war.

The Rogue River is a tributary of the South Yamhill River in Polk County, Oregon, United States. It enters the South Yamhill about 1,000 feet (300 m) north of Grand Ronde. It is sometimes referred to as Rogue Creek. It was named for the Rogue River Indians who lived along its banks after they were forced to move from Southern Oregon to the nearby Grand Ronde Indian Reservation. Its headwaters are on the northeast face of Saddleback Mountain, elevation 3,004 feet (916 m).

Grand Ronde is a census-designated place (CDP) and unincorporated community in Polk and Yamhill counties, Oregon, United States. Historically noted as a village in Polk County, the sphere of influence and community is in both Polk and Yamhill counties. The name of the community is a variation of the French Grande Ronde or "Grand Round" which could be about the large round-up of Native American peoples in the area who were settled on what was known as the Grand Ronde Indian Reservation, or possibly referencing the shape of the valley in which the community is located. As of the census of 2010, there were 1,661 people in 658 households residing in Grand Ronde. It is part of the Salem Metropolitan Statistical Area.

Agency Creek is a stream in the U.S. state of Oregon, located in Yamhill County. Agency Creek is a tributary to the South Yamhill River.

The Wind River is a stream in Yamhill County in the U.S. state of Oregon. The stream, about 4 miles (6 km) long, runs generally north–south through the Grand Ronde Community. Wind River enters Agency Creek, a tributary of the South Yamhill River, west of Spirit Mountain and north of Grand Ronde.

Willamina is a city in Polk and Yamhill Counties in the U.S. state of Oregon. The population was 2,239 at the 2020 census. The Yamhill County portion of Willamina is part of the Portland–Vancouver–Beaverton, Metropolitan Statistical Area, while the Polk County portion is part of the Salem Metropolitan Area.

Willamina High School is a public high school in Willamina, Oregon, United States.

The Willamina School District (WSD) is a school district in Yamhill County, Oregon which provides K-12 education for the communities of Willamina and Grand Ronde. The district contains an elementary, middle, and high school which all reside on the same campus.

Willamina Creek is a tributary, about 20 miles (32 km) long, of the South Yamhill River in the U.S. state of Oregon. Beginning in the Northern Oregon Coast Range in Yamhill County, it briefly enters and exits a small part of eastern Tillamook County, then flows generally south to meet the larger stream at Willamina, near the border with Polk County.

Riverside is an unincorporated historic locale in Yamhill County, Oregon, United States. It lies at an elevation of 213 feet (65 m).

Delphian School is a co-ed K–12 private school operated by Delphi Schools. It uses L. Ron Hubbard's study techniques, known as Study Tech. It is located on a 720-acre campus in unincorporated Yamhill County, Oregon, near Sheridan. Most students live on campus either full-time or five-day (going home for the weekends). The school also accepts day students; boarders must be at least eight years old, while day students can be as young as five. Most of the school's 272 students are in grades 8-12.