Yamhill County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 107,722. The county seat is McMinnville. Yamhill County was named after the Yamhelas, members of the Kalapuya Tribe.
Sheridan is a city in Yamhill County, Oregon, United States. Platted in the 1860s when it received a post office, the city was incorporated in 1880. A major fire burned much of the city in 1913, and a flood covered much of the city in 1964. The population of the city as of the 2010 Census was 6,127, an increase from 3,570 at the 2000 census. However, the 2000 Census count failed to include those incarcerated at the federal prison in the city, while the newer count did include those inmates.
Willamina is a city in Polk and Yamhill Counties in the U.S. state of Oregon. The population was 2,025 at the 2010 census.
The Yamhill River is an 11-mile (18 km) tributary of the Willamette River, in the U.S. state of Oregon. Formed by the confluence of the South Yamhill River and the North Yamhill River about 3 miles (5 km) east of McMinnville, it drains part of the Northern Oregon Coast Range. The river meanders east past Dayton to join the Willamette River at its river mile (RM) 55 or river kilometer (RK) 89, south of Newberg.
The North Yamhill River is a 31-mile (50 km) tributary of the Yamhill River in the U.S. state of Oregon. It drains an area of the Northern Oregon Coast Range, as well as part of the Willamette Valley west of the Willamette River.
The South Yamhill River is a tributary of the Yamhill River, approximately 60 miles (97 km) long, in northwest Oregon in the United States. It drains an area of the Northern Oregon Coast Range, as well as part of the Willamette Valley west of the Willamette River.
The Salmon River flows from the Central Oregon Coast Range to the Pacific Ocean coast of northwest Oregon in the United States. About 24 miles (39 km) long, it begins and ends in Lincoln County but also flows briefly through western Polk and southern Tillamook counties. Much of its course lies within the Siuslaw National Forest.
Heron Books is an American K-12 research company, publishing educational materials, learning guides and books for schools, parents and children. Products are distributed internationally through retail and online sales and fairs.
Oregon Route 18 is a state highway that runs between the Oregon Coast, near Lincoln City, and Newberg. OR 18 traverses the Salmon River Highway No. 39 of the Oregon state highway system, named after the river alongside its westernmost segments.
Delphi Schools, Inc. operates private schools that use the study methods known as Study Tech that were developed by L. Ron Hubbard. The headquarters for Delphi Schools, Inc. are located on the property of the founding school, The Delphian School, in Yamhill County, Oregon, near Sheridan. The organization's publishing arm operates under the assumed business name of Heron Books. This is also the address where The Delphian School is located. It was incorporated in 1973 as the Delphi Foundation, and changed to the present name in 1987. Delphi Schools says that its schools teach using "The Delphi Program", which "is a unique, integrated approach to learning." The Study Technology is licensed through the Scientology related group Applied Scholastics. Several Delphi schools use the Heron Basics Program of Heron Books for instruction.
Bellevue is an unincorporated rural community in Yamhill County, Oregon, United States. It is named for the French words for "beautiful view". It is not known who named the community, but it was settled in about 1860, and a previous post office in the area was named "Muddy". The community is located on the donation land claim of Hathaway Yocum, who came to Oregon from Illinois in 1851. Bellevue post office operated from 1869 to 1904.
Whiteson is an unincorporated community in Yamhill County, Oregon, United States. Oregon Geographic Names states that Whiteson is named for either for Henry White, who laid out the town site and gave the railroad right-of-way, or for William White. It is possible they are members of the same family. Whiteson post office was established in 1890. Whiteson is an agricultural community lacking either Oregon hamlet or village classification, and relies on the neighboring communities of McMinnville and Amity for basic services such as fire, health, and education. The Yamhill County Sheriff has primary police jurisdiction over Whiteson.
Gopher Valley is a valley in Yamhill County, Oregon, United States. Gopher, Oregon was an unincorporated locale in the valley. Gopher post office ran from April 6, 1899 to September 14, 1905, with Edward H. Taylor first postmaster.
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.
Sheridan State Scenic Corridor is a state park in the Columbia River Gorge, west of Cascade Locks, Oregon. The 11-acre (4.5 ha) property, containing an old-growth forest, is located on the south side of Interstate 84 at approximately milepoint 42.5, and was not accessible by motor vehicle since I-84 was built in 1960. However, with the opening of the Eagle Creek-Cascade Locks segment of the Historic Columbia River Highway State Trail in 1998, it has become easily accessible by foot or bicycle. The park is on a triangular lot, surrounded by I-84 and the Mount Hood National Forest.
Erratic Rock State Natural Site is a state park in the Willamette Valley of Oregon, United States. Featuring a 40-short-ton (36 t) glacial erratic from the Missoula Floods, the small park sits atop a foothill of the Northern Oregon Coast Range in Yamhill County between Sheridan and McMinnville off Oregon Route 18. The day use only park is owned and maintained by the Oregon Parks and Recreation Department.
Palmer Creek is a tributary of the Yamhill River in northwestern Oregon in the United States. Arising in Polk County it flows north, crossing almost immediately into Yamhill County. It continues generally north, entering the larger stream at Dayton, 5 miles (8 km) upstream of the Yamhill's confluence with the Willamette River.
Chehalem Creek is a tributary of the Willamette River in Yamhill County in the U.S. state of Oregon. It drains a watershed of 43,400 acres (176 km2), about 68 square miles. Its headwaters rise on the eastern slope of the Northern Oregon Coast Range above Larsen Reservoir 6 miles (10 km) southeast of Gaston and discharge into the Willamette near Newberg. The word "Chehalem" is a corruption of the Atfalati Indian word "'Chahelim'", a name given in 1877 to one of the bands of Atfalati.
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.
