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Counties that are adopted in Red.

County
Established
Origin
Etymology
Maps
pending
Baker 1862Wasco County, Union County and Malheur CountyEdward Dickinson Baker, a senator from Oregon who was killed at Ball's Bluff, a battle of the American Civil WarState map highlighting Baker County
Benton 1847Polk CountyThomas Hart Benton, a U.S. senator who advocated U.S. control over the Oregon CountryState map highlighting Benton County
Clackamas 1843One of the original four districts of the Oregon CountryThe Clackamas Indians, a Native American tribe living in the area.State map highlighting Clackamas County
Clatsop 1844Northern and western portions of the original Twality DistrictClatsop tribe of Native Americans, who lived along the coast of the Pacific Ocean prior to European settlementState map highlighting Clatsop County
Columbia 1854Northern half of Washington CountyColumbia River, which forms the county's eastern and northern bordersState map highlighting Columbia County
Coos 1853Western parts of Umpqua and Jackson CountiesThe Coos Tribe of Native Americans who lived in the regionState map highlighting Coos County
Crook 1882Southern part of Wasco CountyGeorge Crook (1828 ? 1890), a U.S. Army officer who served in the American Civil War and the Indian WarsState map highlighting Crook County
Curry 1855Coos CountyGeorge Law Curry (1820-1878), a governor of the Oregon TerritoryState map highlighting Curry County
Deschutes 1916Southern part of Crook CountyThe Deschutes River, which flows thourgh the county.State map highlighting Deschutes County
Douglas 1852Portion of Umpqua County which lay east of the Coast Range summitStephen A. Douglas (1813 - 1861), a U.S. politician who supported Oregon statehoodState map highlighting Douglas County
Gilliam 1885Eastern third of Wasco CountyCornelius Gilliam (1798 - 1848), a pioneer who commanded the forces of the Provisional Government of Oregon after the Whitman MassacreState map highlighting Gilliam County
Grant 1864Parts of old Wasco and old Umatilla countiesUlysses S. Grant (1822 ? 1885), army officer who served in the Oregon Territory; a Union general in the American Civil War at the time of the county's creation; and subsequently President of the United States (1869?1877)State map highlighting Grant County
Harney 1889Southern two-thirds of Grant CountyWilliam S. Harney (1800 - 1889), a cavalry officer of the period, who was involved in the Pig WarState map highlighting Harney County
Hood River 1908Northwest portion of Wasco CountyThe Hood River (a tributary of the Columbia River), which flows through the countyState map highlighting Hood River County
Jackson 1852Southwestern portion of Lane County and the unorganized area south of Douglas and Umpqua CountiesAndrew Jackson (1767 ? 1845), the seventh President of the United StatesState map highlighting Jackson County
Jefferson 1914Crook CountyMount Jefferson, which is located on its western boundary.State map highlighting Jefferson County
Josephine 1856Western half of Jackson CountyVirginia "Josephine" Rollins, the first white woman to make this county her home.State map highlighting Josephine County
Klamath 1882Western part of Lake CountyThe Klamath or Clamitte tribe, which has had a presence in the area for 10,000 years.State map highlighting Klamath County
Lake 1874Jackson and Wasco CountiesNumerous lakes and hot springs.State map highlighting Lake County
Lane 1851Southern part of Linn County and the portion of Benton County east of Umpqua CountyGen. Joseph Lane (1801 ? 1881), the first governor of Oregon TerritoryState map highlighting Lane County
Lincoln 1893Western portion of Benton County and Polk CountyAbraham Lincoln (1809 ? 1865), sixteenth President of the United States.State map highlighting Lincoln County
Linn 1847Southern portion of Champoeg (later Marion) CountyU.S. Senator Lewis F. Linn (1795 ? 1843) of Missouri, author of the Donation Land Act, which provided free land to settlers in the West.State map highlighting Linn County
Malheur 1887Southern portion of Baker CountyMalheur River (formally "Riviere au Malheur" or "Unfortunate River"), named by French trappers whose property and furs were stolen from their river encampment.State map highlighting Malheur County
Marion 1843One of the original four districts of the Oregon territoryFrancis Marion (1732 ? 1795), American Revolutionary War generalState map highlighting Marion County
Morrow 1885Western portion of Umatilla County and a small portion of eastern Wasco CountyJackson L. Morrow, an early residentState map highlighting Morrow County
Multnomah 1854Eastern part of Washington and the northern part of Clackamas countiesThe Indian village of Multnomah, on Sauvie Island. The word is derived from nematlnomaq, probably meaning downriver. Lewis and Clark made note of the name in 1805, and applied that name to all local Indians.State map highlighting Multnomah County
Polk 1845Yamhill DistrictJames Knox Polk (1795 ? 1849), President of the United States at the time of the county's creationState map highlighting Polk County
Sherman 1889Northeast corner of Wasco CountyWilliam Tecumseh Sherman, American Civil War general, and businessman, educator, and authorState map highlighting Sherman County
Tillamook 1853Clatsop, Yamhill and Polk CountiesTillamook (or Killamook) Native American people.State map highlighting Tillamook County
Umatilla 1862Portion of Wasco CountyTraces its creation in 1862 to the regional gold rushes, which spawned the riverport of Umatilla City (just above the mouth of the Umatilla River) and brought stockraisers to the lush grasslands.State map highlighting Umatilla County
Union 1864Baker CountyThe town of Union, which had been established two years before and named by its founders for the "Union" of the states during the Civil War.State map highlighting Union County
Wallowa 1887Eastern portion of Union County.The Nez Perce word wallowa to designate a tripod of poles used to support fish nets. The area was claimed by the Chief Joseph band of the Nez Perce as its hunting and fishing groundsState map highlighting Wallowa County
Wasco 1854Parts of Clackamas, Lane, Linn and Marion countiesThe Wasco (or Wascopam) Native American tribe.State map highlighting Wasco County
Washington 1843One of the original four districts of the Oregon Country (as Twality District)George Washington (1732 ? 1799), Founding Father of the United States and first President of the United StatesState map highlighting Washington County
Wheeler 1899Parts of Grant, Gilliam, and Crook CountiesHenry H. Wheeler, who operated the first mail stage line from The Dalles to Canyon City.State map highlighting Wheeler County
Yamhill 1843One of the original four districts of the Oregon CountryThe Yamhelas, members of the Kalapuya Native American family, who lived along the Yamhill River in the western Willamette Valley.State map highlighting Yamhill County