Area code 505

Area code 575 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of New Mexico. The numbering plan area (NPA) comprises the remainder of the state outside the Albuquerque, Santa Fe, Farmington, and Gallup metropolitan and micropolitan areas, which use area code 505. Operation of area code 575 became effective on October 7, 2007, splitting from NPA 505. Area code 505 is one of the original area codes established with the North American Numbering Plan in 1947, when it served the entire state. Since October 2007, it has been the last area code in the United States introduced by an area code split, and will likely be the last area created from such. All new area codes added in the U.S. since have been from overlays, in which a new code is added to the same geographic area as an existing code. Prior to October 2021, area code 575 had telephone numbers assigned for the central office code 988. In 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021.

Area codes 503 and 971 are telephone area codes in the North American Numbering Plan (NANP) for the northwestern region of the U.S. state of Oregon. The numbering plan area (NPA) comprises the cities of Portland, Salem, and Astoria. Area code 503 was one of the original North American area codes of 1947, assigned to the entire state until 1995, when its extent was reduced to the northwest corner. Area code 971 was assigned to the service area in stages, completed in 2008, to form an overlay in the area with ten-digit dialing.

Dairy Creek is a 10.55-mile (16.98 km) tributary of the Tualatin River in the U.S. state of Oregon. It begins at the confluence of its east and west forks near the unincorporated community of Schefflin and meanders southeast across the Tualatin Valley to the Tualatin River near Hillsboro, in Washington County. East Fork Dairy Creek begins at 45.788446°N 123.041498°W / 45.788446; -123.041498 (Dairy Creek East Fork source) in Columbia County, slightly north of its border with Washington County, and flows generally south for 22 miles (35 km). West Fork Dairy Creek, also about 22 miles (35 km) long, forms at 45.7553899°N 123.178168°W / 45.7553899; -123.178168 (Dairy Creek West Fork source), near the unincorporated community of Tophill, and flows generally southeast. Before railroads displaced river boats on the Tualatin, some steamships also worked the lower section of Dairy Creek, with plans to go as far up stream as Centerville.

Clean Water Services is the water resources management utility for more than 600,000 residents in urban Washington County, Oregon and small portions of Multnomah County, Oregon and Clackamas County, Oregon, in the United States. Clean Water Services operates four wastewater treatment facilities, constructs and maintains flood management and water quality projects, and manages flow into the Tualatin River to improve water quality and protect fish habitat. They are headquartered in Hillsboro.

Jackson Bottom Wetlands Preserve in Hillsboro, Oregon, United States, is a 635-acre (257 ha) wetlands area along the Tualatin River in Washington County, Oregon. Located on the south end of the city along Highway 219, this lowland area is a designated Important Bird Area and hosts such birds as buffleheads, dusky Canada geese, and tundra swans.

The Tualatin Valley is a farming and suburban region southwest of Portland, Oregon in the United States. The valley is formed by the meandering Tualatin River, a tributary of the Willamette River at the northwest corner of the Willamette Valley, east of the Northern Oregon Coast Range. Most of the valley is located within Washington County, separated from Portland by the Tualatin Mountains. Communities in the Tualatin Valley include Banks, Forest Grove, Cornelius, Hillsboro, Aloha, Beaverton, Sherwood, Tigard, and Tualatin.

The Tualatin Plains are a prairie area in central Washington County, Oregon, United States. Located around the Hillsboro and Forest Grove areas, the plains were first inhabited by the Atfalati band of the Kalapuya group of Native Americans. Euro-American settlement began in the 1840s.

Thomas H. Tongue III (February 12, 1912 – May 31, 1994) was an American jurist in the state of Oregon. A native of the state, he served as the 75th associate justice of the Oregon Supreme Court, serving 13 years on the state's highest court. Tongue was the grandson of U.S. Representative Thomas H. Tongue, who was an emigrant from England in the early days of the state of Oregon.

Thomas H. Tongue (June 23, 1844 – January 11, 1903) was an American politician and attorney in the state of Oregon. Born in England, his family immigrated to Washington County, Oregon, in 1859. In Oregon, he would serve in the State Senate from 1889 to 1893 and was the seventh mayor of Hillsboro. A Republican, he was chairman of the state party, and national convention delegate in 1892. Tongue served as Congressman from 1897 to 1903 representing Oregon's 1st congressional district.

Fern Hobbs (May 8, 1883 – April 10, 1964) was an American attorney in the U.S. state of Oregon, and Private Secretary to Oregon Governor Oswald West. She was noted for her ambition and several accomplishments as a young woman, and became the highest-paid woman in public service in America in her mid-twenties.Hobbs made international news when Governor West sent her to implement martial law in the small Eastern Oregon town of Copperfield. The event was considered a strategic coup for West, establishing the State's authority over a remote rural community and cementing his reputation as a proponent of prohibition. Hobbs later worked for the American Red Cross in Europe and at The Oregon Journal newspaper. She died in Portland in 1964.

Albert E. Tozier (March 7, 1860 – June 27, 1937) was an American newspaper editor and local historian in Oregon. A native of Nebraska, he moved to Oregon as a child with his parents, settling in Hillsboro. His father, Charles T. Tozier, served as mayor of the town and in the Oregon Legislative Assembly. Albert worked as editor of The Hillsboro Argus and curator of the museum at Champoeg.

David Hill (1809 – May 9, 1850) was an American pioneer and settler of what became Hillsboro, Oregon, United States. He served in the Provisional Government of Oregon in both the executive and legislative branches, and later as a legislator in the first Oregon Territorial Legislature. Hill made a transaction with the county court in 1850 that led to the renaming of Columbus to Hillsborough in honor of Hill.