List of counties in Oregon

The following is a list of 36 counties in the U.S. state of Oregon. The Oregon Constitution does not explicitly provide for county seats; Article VI, covering the "Administrative Department" of the state of Oregon, simply states that:

All county and city officers shall keep their respective offices at such places therein, and perform such duties, as may be prescribed by law.[2]

Counties of Oregon
LocationState of Oregon
Number36
Populations1,430 (Wheeler) – 811,880 (Multnomah)[1]
Areas435 square miles (1,130 km2) (Multnomah) – 10,135 square miles (26,250 km2) (Harney)
GovernmentCounty government
Subdivisionscities, towns, townships, unincorporated communities, indian reservations, census designated place
Oregon counties by date of establishment
  1840–1849
  1850–1859
  1860–1869
  1870–1889
  After 1890

More details on the etymologies of Oregon county names and place names in general are documented in Oregon Geographic Names. Oregon's postal abbreviation is OR and its FIPS state code is 41.

County information

The Federal Information Processing Standard (FIPS) code, which is used by the United States government to uniquely identify counties, is provided with each entry. The FIPS code for each county links to census data for that county.

County
 FIPS code[3] County seat[4] Est.[4] Origin[5] Etymology[5] Population[6] Area[4] Map
Baker County 001 Baker City1862Eastern portion of Wasco CountyEdward Dickinson Baker, a senator from Oregon who was killed at Ball's Bluff, a battle of the American Civil War 16,510 3,068 sq mi
(7,946 km2)
Benton County 003 Corvallis1847Polk CountyThomas Hart Benton (1782–1858), a U.S. senator who advocated U.S. control over the Oregon Country 91,320 676 sq mi
(1,751 km2)
Clackamas County 005 Oregon City1843One of the original four districts of the Oregon CountryThe Clackamas Indians, a Native American tribe living in the area. 404,980 1,868 sq mi
(4,838 km2)
Clatsop County 007 Astoria1844Northern and western portions of the original Twality DistrictClatsop tribe of Native Americans, who lived along the coast of the Pacific Ocean prior to European settlement 38,225 827 sq mi
(2,142 km2)
Columbia County 009 Saint Helens1854Northern half of Washington CountyColumbia River, which forms the county's northern borders 50,795 657 sq mi
(1,702 km2)
Coos County 011 Coquille1853Western parts of Umpqua and Jackson CountiesThe Coos Tribe of Native Americans who lived in the region 63,190 1,600 sq mi
(4,144 km2)
Crook County 013 Prineville1882Southern part of Wasco CountyGeorge Crook (1828–1890), a U.S. Army officer who served in the American Civil War and the Indian Wars 21,580 2,980 sq mi
(7,718 km2)
Curry County 015 Gold Beach1855Coos CountyGeorge Law Curry (1820–1878), a governor of the Oregon Territory 22,600 1,627 sq mi
(4,214 km2)
Deschutes County 017 Bend1916Southern part of Crook County"Riviere des Chutes", French for "River of the Falls". 176,635 3,018 sq mi
(7,817 km2)
Douglas County 019 Roseburg1852Portion of Umpqua County which lay east of the Coast Range summitStephen A. Douglas (1813–1861), a U.S. Senator who supported Oregon statehood 110,395 5,037 sq mi
(13,046 km2)
Gilliam County 021 Condon1885Eastern third of Wasco CountyCornelius Gilliam (1798–1848), a pioneer who commanded the forces of the Provisional Government of Oregon after the Whitman massacre 1,980 1,204 sq mi
(3,118 km2)
Grant County 023 Canyon City1864Parts 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) 7,410 4,529 sq mi
(11,730 km2)
Harney County 025 Burns1889Southern two-thirds of Grant CountyWilliam S. Harney (1800–1889), a cavalry officer of the period, who was involved in the Pig War 7,320 10,135 sq mi
(26,250 km2)
Hood River County 027 Hood River1908Northwest portion of Wasco CountyThe Hood River (a tributary of the Columbia River), which flows through the county 24,735 522 sq mi
(1,352 km2)
Jackson County 029 Medford1852Southwestern portion of Lane County and the unorganized area south of Douglas and Umpqua CountiesAndrew Jackson (1767–1845), the seventh President of the United States 213,765 2,785 sq mi
(7,213 km2)
Jefferson County 031 Madras1914Crook CountyMount Jefferson, which is located on its western boundary, named in turn for Thomas Jefferson (1743–1826), the 3rd president of the United States. 22,790 1,781 sq mi
(4,613 km2)
Josephine County 033 Grants Pass1856Western half of Jackson CountyVirginia "Josephine" Rollins, the first white woman to make this county her home. 84,675 1,640 sq mi
(4,248 km2)
Klamath County 035 Klamath Falls1882Western part of Lake CountyThe Klamath or Clamitte tribe, which has had a presence in the area for 10,000 years. 67,410 5,945 sq mi
(15,397 km2)
Lake County 037 Lakeview1874Jackson and Wasco CountiesNumerous lakes and hot springs. 8,015 7,940 sq mi
(20,565 km2)
Lane County 039 Eugene1851Southern part of Linn County and the portion of Benton County east of Umpqua CountyGen. Joseph Lane (1801–1881), the first governor of Oregon Territory 365,940 4,554 sq mi
(11,795 km2)
Lincoln County 041 Newport1893Western portion of Benton County and Polk CountyAbraham Lincoln (1809–1865), sixteenth President of the United States. 47,735 980 sq mi
(2,538 km2)
Linn County 043 Albany1847Southern 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. 122,315 2,291 sq mi
(5,934 km2)
Malheur County 045 Vale1887Southern 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. 31,705 9,888 sq mi
(25,610 km2)
Marion County 047 Salem1843One of the original four districts of the Oregon territoryFrancis Marion (1732–1795), American Revolutionary War general 333,950 1,185 sq mi
(3,069 km2)
Morrow County 049 Heppner1885Western portion of Umatilla County and a small portion of eastern Wasco CountyJackson L. Morrow, a state representative who advocated for the formation of the county. 11,745 2,033 sq mi
(5,265 km2)
Multnomah County 051 Portland1854Eastern 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. 790,670 435 sq mi
(1,127 km2)
Polk County 053 Dallas1845Yamhill DistrictJames Knox Polk (1795–1849), President of the United States at the time of the county's creation 79,730 741 sq mi
(1,919 km2)
Sherman County 055 Moro1889Northeast corner of Wasco CountyWilliam Tecumseh Sherman (1820–1891), American Civil War general, and businessman, educator, and author 1,795 823 sq mi
(2,132 km2)
Tillamook County 057 Tillamook1853Clatsop, Yamhill and Polk CountiesTillamook (or Killamook) Native American people. 25,920 1,102 sq mi
(2,854 km2)
Umatilla County 059 Pendleton1862Central portion of Wasco CountySahaptin word, possibly meaning laughing waters. 79,880 3,215 sq mi
(8,327 km2)
Union County 061 La Grande1864Baker 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. 26,745 2,037 sq mi
(5,276 km2)
Wallowa County 063 Enterprise1887Eastern 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 grounds 7,140 3,145 sq mi
(8,146 km2)
Wasco County 065 The Dalles1854Parts of Clackamas, Lane, Linn and Marion countiesThe Wasco (or Wascopam) Native American tribe. 26,700 2,381 sq mi
(6,167 km2)
Washington County 067 Hillsboro1843One 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 States 583,595 724 sq mi
(1,875 km2)
Wheeler County 069 Fossil1899Grant County, Gilliam County, and Crook CountyHenry H. Wheeler, who operated the first mail stage line from The Dalles to Canyon City. 1,465 1,715 sq mi
(4,442 km2)
Yamhill County 071 McMinnville1843One 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. 104,990 716 sq mi
(1,854 km2)

See also

References
  1. "U.S. Census Bureau QuickFacts: Multnomah County, Oregon". census.gov.
  2. "Oregon Secretary of State: Constitution of Oregon". sos.oregon.gov.
  3. "EPA County FIPS Code Listing". EPA. Retrieved April 9, 2007.
  4. National Association of Counties. "NACo – Find a county". Archived from the original on October 25, 2007. Retrieved April 26, 2007.
  5. Oregon State Archives. "County Government". Oregon Blue Book. Retrieved February 23, 2008.
  6. "Certified Population Estimates for Oregon and Counties (2016)". Population Research Center. Portland State University. December 15, 2016. Retrieved March 1, 2017.
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