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List of counties in Oregon

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Counties of Oregon
LocationState of Oregon
Number36
Populations1,436 (Wheeler) – 789,698 (Multnomah)[1]
Areas435 square miles (1,130 km2) (Multnomah) – 10,135 square miles (26,250 km2) (Harney)
Government
Subdivisions

There are 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]

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.

Oregon counties by date of establishment
  1840–1849
  1850–1859
  1860–1869
  1870–1889
  After 1890

County information

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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 City 1862 Eastern portion of Wasco County Named in honor of Edward Dickinson Baker, who died in combat while serving as Oregon senator. 16,912 3,068 sq mi
(7,946 km2)
State map highlighting Baker County
Benton County 003 Corvallis 1847 Polk County Named for Thomas Hart Benton, senator and advocate of U.S. annexation of the Oregon Country. 97,713 676 sq mi
(1,751 km2)
State map highlighting Benton County
Clackamas County 005 Oregon City 1843 One of the original four districts of the Oregon Country Named for the Clackamas people, a local Native American tribe. 423,173 1,868 sq mi
(4,838 km2)
State map highlighting Clackamas County
Clatsop County 007 Astoria 1844 Northern and western portions of the original Twality District Named for the Clatsop, a local Native American tribe. 41,102 827 sq mi
(2,142 km2)
State map highlighting Clatsop County
Columbia County 009 Saint Helens 1854 Northern half of Washington County Named for the neighboring Columbia River. 53,880 657 sq mi
(1,702 km2)
State map highlighting Columbia County
Coos County 011 Coquille 1853 Western parts of Umpqua and Jackson Counties Named for the Coos people, a regional Native American group. 64,212 1,600 sq mi
(4,144 km2)
State map highlighting Coos County
Crook County 013 Prineville 1882 Southern part of Wasco County Named for George Crook, a Union army officer in the Civil War and Indian Wars. 26,952 2,980 sq mi
(7,718 km2)
State map highlighting Crook County
Curry County 015 Gold Beach 1855 Coos County Named for George Law Curry, governor of the Oregon Territory. 23,296 1,627 sq mi
(4,214 km2)
State map highlighting Curry County
Deschutes County 017 Bend 1916 Southern part of Crook County Named for the Deschutes River from French Riviere des Chutes, 'River of the falls'. 208,513 3,018 sq mi
(7,817 km2)
State map highlighting Deschutes County
Douglas County 019 Roseburg 1852 Portion of Umpqua County which lay east of the Coast Range summit Named for senator Stephen A. Douglas, a supporter of Oregon's admission to the union. 112,435 5,037 sq mi
(13,046 km2)
State map highlighting Douglas County
Gilliam County 021 Condon 1885 Eastern third of Wasco County Named for Oregon pioneer Cornelius Gilliam (1798–1848). 2,026 1,204 sq mi
(3,118 km2)
State map highlighting Gilliam County
Grant County 023 Canyon City 1864 Parts of old Wasco and old Umatilla counties Named for Ulysses S. Grant prior to his election as president, in recognition of his military service. 7,215 4,529 sq mi
(11,730 km2)
State map highlighting Grant County
Harney County 025 Burns 1889 Southern two-thirds of Grant County Named in honor of cavalry officer William S. Harney. 7,440 10,135 sq mi
(26,250 km2)
State map highlighting Harney County
Hood River County 027 Hood River 1908 Northwest portion of Wasco County Named for the Hood River. 23,745 522 sq mi
(1,352 km2)
State map highlighting Hood River County
Jackson County 029 Medford 1852 Southwestern portion of Lane County and unorganized area south of Douglas and Umpqua Counties. Named for President Andrew Jackson. 220,768 2,785 sq mi
(7,213 km2)
State map highlighting Jackson County
Jefferson County 031 Madras 1914 Crook County Named for the adjacent Mount Jefferson, itself named for President Thomas Jefferson. 25,454 1,781 sq mi
(4,613 km2)
State map highlighting Jefferson County
Josephine County 033 Grants Pass 1856 Western half of Jackson County Named for Virginia "Josephine" Rollins, the first female settler in the area. 87,821 1,640 sq mi
(4,248 km2)
State map highlighting Josephine County
Klamath County 035 Klamath Falls 1882 Western part of Lake County Named for the Klamath people, a local Native American tribe. 70,003 5,945 sq mi
(15,397 km2)
State map highlighting Klamath County
Lake County 037 Lakeview 1874 Jackson and Wasco Counties Named for the large number of local lakes and springs. 8,293 7,940 sq mi
(20,565 km2)
State map highlighting Lake County
Lane County 039 Eugene 1851 Southern part of Linn County and the portion of Benton County east of Umpqua County Named for Joseph Lane, the first governor of the Oregon Territory. 381,181 4,554 sq mi
(11,795 km2)
State map highlighting Lane County
Lincoln County 041 Newport 1893 Western portion of Benton County and Polk County Named for President Abraham Lincoln. 50,821 980 sq mi
(2,538 km2)
State map highlighting Lincoln County
Linn County 043 Albany 1847 Southern portion of Champoeg (later Marion) County Named for Lewis F. Linn, sponsor of the Donation Land Act. 131,496 2,291 sq mi
(5,934 km2)
State map highlighting Linn County
Malheur County 045 Vale 1887 Southern portion of Baker County Named for the Malheur River, itself from French Riviere au Malheur, 'Unfortunate River', named by French fur trappers whose belongings were stolen along the river. 32,044 9,888 sq mi
(25,610 km2)
State map highlighting Malheur County
Marion County 047 Salem 1843 One of the original four districts of the Oregon territory Named for Francis Marion (1732-1795), a Revolutionary War general. 346,741 1,185 sq mi
(3,069 km2)
State map highlighting Marion County
Morrow County 049 Heppner 1885 Western portion of Umatilla County and a small portion of eastern Wasco County Named for state representative Jackson L. Morrow, an advocate for the formation of the county. 12,302 2,033 sq mi
(5,265 km2)
State map highlighting Morrow County
Multnomah County 051 Portland 1854 Eastern part of Washington and the northern part of Clackamas counties Named for the Multnomah people, a Chinookan band from Sauvie Island. 789,698 435 sq mi
(1,127 km2)
State map highlighting Multnomah County
Polk County 053 Dallas 1845 Yamhill District Named for President James Knox Polk, who was serving during the county's creation. 89,805 741 sq mi
(1,919 km2)
State map highlighting Polk County
Sherman County 055 Moro 1889 Northeast corner of Wasco County Named for Union general William Tecumseh Sherman. 1,951 823 sq mi
(2,132 km2)
State map highlighting Sherman County
Tillamook County 057 Tillamook 1853 Clatsop, Yamhill and Polk Counties Named for the Tillamook people, a Native American tribe. 27,417 1,102 sq mi
(2,854 km2)
State map highlighting Tillamook County
Umatilla County 059 Pendleton 1862 Central portion of Wasco County Named for the adjacent Umatilla River, derived from a Sahaptin, word possibly meaning laughing waters. 80,053 3,215 sq mi
(8,327 km2)
State map highlighting Umatilla County
Union County 061 La Grande 1864 Baker County Named for the town of Union, itself named for the Union during the Civil War. 25,944 2,037 sq mi
(5,276 km2)
State map highlighting Union County
Wallowa County 063 Enterprise 1887 Eastern portion of Union County. Named after the Nez Perce wallowa, a tripod of poles used to support fish nets. 7,674 3,145 sq mi
(8,146 km2)
State map highlighting Wallowa County
Wasco County 065 The Dalles 1854 Parts of Clackamas, Lane, Linn and Marion counties Named for the Wasco people, a Native American tribe. 26,333 2,381 sq mi
(6,167 km2)
State map highlighting Wasco County
Washington County 067 Hillsboro 1843 One of the original four districts of the Oregon Country (as Twality District) Named for president George Washington. 598,865 724 sq mi
(1,875 km2)
State map highlighting Washington County
Wheeler County 069 Fossil 1899 Grant County, Gilliam County, and Crook County Named for Henry H. Wheeler, an early Oregon mail carrier. 1,436 1,715 sq mi
(4,442 km2)
State map highlighting Wheeler County
Yamhill County 071 McMinnville 1843 One of the original four districts of the Oregon Country Named for the Yamhill band of Kalapuya, a local Native American group. 108,644 716 sq mi
(1,854 km2)
State map highlighting Yamhill County

See also

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References

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  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. ^ a b c National Association of Counties. "NACo – Find a county". Archived from the original on October 25, 2007. Retrieved April 26, 2007.
  5. ^ a b Oregon State Archives. "County Government". Oregon Blue Book. Retrieved February 23, 2008.
  6. ^ "U.S. Census Bureau QuickFacts: Oregon". U.S. Census Bureau. Retrieved April 19, 2024.
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