This list has information about all 36 counties in Oregon, such as their area, FIPS code, county seat, population, and established year. The list is accessible in different file formats, including MS Excel, CSV, PDF, and ZIP (which has all file formats).
S.No.,County,FIPS code,County seat,Area,Population,Established Year,Origin1,Baker County,001,Baker City,"3,068sqmi(7,946km)","16,847",1862,Eastern portion of Wasco County2,Benton County,003,Corvallis,"676sqmi(1,751km)","96,017",1847,Polk County3,Clackamas County,005,Oregon City,"1,868sqmi(4,838km)","422,537",1843,One of the original four districts of the Oregon Country4,Clatsop County,007,Astoria,"827sqmi(2,142km)","41,810",1844,Northern and western portions of the original Twality District5,Columbia County,009,Saint Helens,"657sqmi(1,702km)","53,074",1854,Northern half of Washington County6,Coos County,011,Coquille,"1,600sqmi(4,144km)","64,999",1853,Western parts of Umpqua and Jackson Counties7,Crook County,013,Prineville,"2,980sqmi(7,718km)","25,739",1882,Southern part of Wasco County8,Curry County,015,Gold Beach,"1,627sqmi(4,214km)","23,683",1855,Coos County9,Deschutes County,017,Bend,"3,018sqmi(7,817km)","204,801",1916,Southern part of Crook County10,Douglas County,019,Roseburg,"5,037sqmi(13,046km)","111,978",1852,Portion of Umpqua County which lay east of the Coast Range summit11,Gilliam County,021,Condon,"1,204sqmi(3,118km)","2,005",1885,Eastern third of Wasco County12,Grant County,023,Canyon City,"4,529sqmi(11,730km)","7,272",1864,Parts of old Wasco and old Umatilla counties13,Harney County,025,Burns,"10,135sqmi(26,250km)","7,575",1889,Southern two-thirds of Grant County14,Hood River County,027,Hood River,"522sqmi(1,352km)","24,057",1908,Northwest portion of Wasco County15,Jackson County,029,Medford,"2,785sqmi(7,213km)","223,734",1852,Southwestern portion of Lane County and unorganized area south of Douglas and Umpqua Counties.16,Jefferson County,031,Madras,"1,781sqmi(4,613km)","25,068",1914,Crook County17,Josephine County,033,Grants Pass,"1,640sqmi(4,248km)","88,346",1856,Western half of Jackson County18,Klamath County,035,Klamath Falls,"5,945sqmi(15,397km)","70,164",1882,Western part of Lake County19,Lake County,037,Lakeview,"7,940sqmi(20,565km)","8,276",1874,Jackson and Wasco Counties20,Lane County,039,Eugene,"4,554sqmi(11,795km)","383,189",1851,Southern part of Linn County and the portion of Benton County east of Umpqua County21,Lincoln County,041,Newport,"980sqmi(2,538km)","50,862",1893,Western portion of Benton County and Polk County22,Linn County,043,Albany,"2,291sqmi(5,934km)","129,839",1847,Southern portion of Champoeg (later Marion) County23,Malheur County,045,Vale,"9,888sqmi(25,610km)","31,693",1887,Southern portion of Baker County24,Marion County,047,Salem,"1,185sqmi(3,069km)","347,119",1843,One of the original four districts of the Oregon territory25,Morrow County,049,Heppner,"2,033sqmi(5,265km)","12,303",1885,Western portion of Umatilla County and a small portion of eastern Wasco County26,Multnomah County,051,Portland,"435sqmi(1,127km)","803,377",1854,Eastern part of Washington and the northern part of Clackamas counties27,Polk County,053,Dallas,"741sqmi(1,919km)","89,164",1845,Yamhill District28,Sherman County,055,Moro,"823sqmi(2,132km)","1,907",1889,Northeast corner of Wasco County29,Tillamook County,057,Tillamook,"1,102sqmi(2,854km)","27,748",1853,"Clatsop, Yamhill and Polk Counties"30,Umatilla County,059,Pendleton,"3,215sqmi(8,327km)","79,988",1862,Central portion of Wasco County31,Union County,061,La Grande,"2,037sqmi(5,276km)","26,212",1864,Baker County32,Wallowa County,063,Enterprise,"3,145sqmi(8,146km)","7,545",1887,Eastern portion of Union County.33,Wasco County,065,The Dalles,"2,381sqmi(6,167km)","26,726",1854,"Parts of Clackamas, Lane, Linn and Marion counties"34,Washington County,067,Hillsboro,"724sqmi(1,875km)","600,811",1843,One of the original four districts of the Oregon Country (as Twality District)35,Wheeler County,069,Fossil,"1,715sqmi(4,442km)","1,451",1899,"Grant County, Gilliam County, and Crook County"36,Yamhill County,071,McMinnville,"716sqmi(1,854km)","108,239",1843,One of the original four districts of the Oregon Country,,,,,,,https://www.downloadexcelfiles.com/,,,,,,,