- published: 09 Jul 2014
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Oregon (i/ˈɔrɨɡən/ ORR-ə-gən) is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern boundaries, respectively. The area was inhabited by many indigenous tribes before the arrival of traders, explorers, and settlers who formed an autonomous government in Oregon Country in 1843. The Oregon Territory was created in 1848, and Oregon became the 33rd state on February 14, 1859.
Oregon is the 9th most extensive and the 27th most populous of the 50 United States. Salem is the state's capital and third-most-populous city; Portland is the most populous. Portland is the 29th-largest U.S. city, with a population of 583,776 (2010 US Census) and a metro population of 2,241,841 (2009 estimate), the 23rd-largest U.S. metro area. The valley of the Willamette River in western Oregon is the state's most densely populated area and is home to eight of the ten most populous cities.
Central Oregon is a geographic region in the U.S. state of Oregon and is traditionally considered to be made up of Deschutes, Jefferson, and Crook counties. Other definitions include larger areas, often encompassing areas to the north towards the Columbia River, eastward towards Burns, or south towards Klamath Falls. These three counties have a combined population of 153,558 as of the 2000 census, with Deschutes the largest of the three counties, having approximately four times the population of the other two counties combined. As of 2008, the most populous city in the region is Bend, with an estimated 80,995 residents. As defined by the three county definition, Central Oregon covers 7,833 square miles (20,290 km2) of land.
The region is located in the middle of the state with the Cascade Range to the west dividing the state from north to south, and the smaller Ochoco Mountains to the east. Portions of the region are part of a basalt plateau formed by the Columbia River Basalt Group, others are part of the slopes of the Cascades, and others part of the Basin and Range. The climate of the area is primarily arid due to the rain shadow effect of the Cascades on the western boundary of the region. Outdoor recreational activities, timber, and ranching are the primary economic activities.