Oregon County Creation Dates and Parent Counties: Difference between revisions

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{{Note|See an interactive outline map of [https://digital.newberry.org/ahcb/map/map.html#OR ''Oregon Historical Counties''] at Newberry Library site.<ref>[https://digital.newberry.org/ahcb/pages/Oregon.html ''Oregon Atlas of Historical County Boundaries''], John H. Long, Editor; Peggy Tuck Sinko, Associate Editor; Gordon DenBoer, Historical Compiler; Douglas Knox, Book Digitizing Director and Digital Compiler; Emily Kelley, Research Associate; Laura Rico-Beck, GIS Specialist; Peter Siczewicz, ArcIMS Interactive Map Designer; Robert Will, Cartographic Assistant. Copyright The Newberry Library 2008.</ref> Select a year and the map will display the historical county boundaries. Click on map image for county details.}}
{| border="1"
 
<br> {{Tip|Sort the table by '''Date Formed''' or by '''Parent Counties''' and check [https://digital.newberry.org/ahcb/documents/OR_County_Index.htm Boundary Changes] for interesting insights.}}
 
{| width="100%" border="1" class="sortable"
|-
|-
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%;" | '''Name of County'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" | '''Name of County'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%;" | '''Date Formed'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" | '''Date Formed'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%;" | '''Boundary<br>Changes'''
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" | '''Parent County'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%;" | '''Parent County'''  
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;" | '''Progeny County'''
| align="center" style="background: rgb(240, 240, 240) none repeat scroll 0% 0%;" | '''Counties Created by Boundary Changes'''
|-
|-
| [[Baker County, Oregon Genealogy|Baker]]  
| [[Baker County, Oregon|Baker]]  
| 1862 Sep 22
| nowrap="nowrap" | 22 Sep 1862  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#BAKER Details]
| Wasco  
| [[Wasco County, Oregon Genealogy|Wasco]]
| Malheur 1887, Union 1864
| [[Malheur County, Oregon Genealogy|Malheur]] 1887, [[Union County, Oregon Genealogy|Union]] 1864
|-
|-
| [[Benton County, Oregon Genealogy|Benton]]  
| [[Benton County, Oregon|Benton]]  
| 1847 Dec 23
| 23 Dec 1847  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#BENTON Details]
| Polk  
| [[Polk County, Oregon Genealogy|Polk]]
| Lincoln 1893, Umpqua 1851
| [[Lincoln County, Oregon Genealogy|Lincoln]] 1893, [[Umpqua County, Oregon Genealogy|Umpqua]] 1851
|-
|-
| [[Champoeg County, Oregon Genealogy|Champoeg]]  
| [[Champoeg County, Oregon|Champoeg]]  
| 1843 Jul 05
| 05 Jul 1843  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#CHAMPOEG Details]
| Oregon Territory  
| [[Oregon Territory]]
| Linn 1847, renamed Marion 1849
| [[Linn County, Oregon Genealogy|Linn]] 1847, renamed [[Marion County, Oregon Genealogy|Marion]] 1849
|-
|-
| [[Clackamas County, Oregon Genealogy|Clackamas]]  
| [[Clackamas County, Oregon|Clackamas]]  
| 1843 Jul 05
| 05 Jul 1843  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#CLACKAMAS Details]
| Oregon Territory  
| [[Oregon Territory]]
| Multnomah 1854, Wasco 1854
| [[Multnomah County, Oregon Genealogy|Multnomah]] 1854, [[Wasco County, Oregon Genealogy|Wasco]] 1854
|-
|-
| [[Clark County, Washington Genealogy|Clark]]  
| [[Clark County, Washington|Clark]]  
| 1843 Jul 05
| 05 Jul 1843  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#CLARK Details]
| Oregon Territory  
| [[Oregon Territory]]
| now in Washington State
| now in [[Washington, United States Genealogy|Washington]] State
|-
|-
| [[Clatsop County, Oregon Genealogy|Clatsop]]  
| [[Clatsop County, Oregon|Clatsop]]  
| 1844 Jun 22
| 22 Jun 1844  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#CLATSOP Details]
| Tuality
| [[Twality County, Oregon Genealogy|Twality]]
| Tillamook 1853
| [[Tillamook County, Oregon Genealogy|Tillamook]] 1853
|-
|-
| [[Columbia County, Oregon Genealogy|Columbia]]  
| [[Columbia County, Oregon|Columbia]]  
| 1854 Jan 16
| 16 Jan 1854  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#COLUMBIA Details]
| Washington  
| [[Washington County, Oregon Genealogy|Washington]]
| none
| none
|-
|-
| [[Coos County, Oregon Genealogy|Coos]]  
| [[Coos County, Oregon|Coos]]  
| 1853 Dec 22
| 22 Dec 1853  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#COOS Details]
| Umpqua, Jackson  
| [[Umpqua County, Oregon Genealogy|Umpqua]], [[Jackson County, Oregon Genealogy|Jackson]]
| Curry 1855
| [[Curry County, Oregon Genealogy|Curry]] 1855
|-
|-
| [[Crook County, Oregon Genealogy|Crook]]  
| [[Crook County, Oregon|Crook]]  
| 1882 Oct 24
| 24 Oct 1882  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#CROOK Details]
| Wasco  
| [[Wasco County, Oregon Genealogy|Wasco]]
| Deschutes 1916, Jefferson 1914, Wheeler 1899
| [[Deschutes County, Oregon Genealogy|Deschutes]] 1916, [[Jefferson County, Oregon Genealogy|Jefferson]] 1914, [[Wheeler County, Oregon Genealogy|Wheeler]] 1899
|-
|-
| [[Curry County, Oregon Genealogy|Curry]]  
| [[Curry County, Oregon|Curry]]  
| 1855 Dec 18
| 18 dec 1855  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#CURRY Details]
| Coos  
| [[Coos County, Oregon Genealogy|Coos]]
| none
| none
|-
|-
| [[Deschutes County, Oregon Genealogy|Deschutes]]  
| [[Deschutes County, Oregon|Deschutes]]  
| 1916 Dec 13
| 13 Dec 1916  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#DESCHUTES Details]
| Crook  
| [[Crook County, Oregon Genealogy|Crook]]
| none
| none
|-
|-
| [[Douglas County, Oregon Genealogy|Douglas]]  
| [[Douglas County, Oregon|Douglas]]  
| 1852 Jan 07
| 07 Jan 1852  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#DOUGLAS Details]
| Umpqua  
| [[Umpqua County, Oregon Genealogy|Umpqua]]
| Wasco 1854
| [[Wasco County, Oregon Genealogy|Wasco]] 1854
|-
|-
| [[Gilliam County, Oregon Genealogy|Gilliam]]  
| [[Gilliam County, Oregon|Gilliam]]  
| 1885 Feb 25
| 25 Feb 1885  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#GILLIAM Details]
| Wasco  
| [[Wasco County, Oregon Genealogy|Wasco]]
| Wheeler 1899
| [[Wheeler County, Oregon Genealogy|Wheeler]] 1899
|-
|-
| [[Grant County, Oregon Genealogy|Grant]]  
| [[Grant County, Oregon|Grant]]  
| 1864 Oct 14
| 14 Oct 1864  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#GRANT Details]
| Wasco, Umatilla  
| [[Wasco County, Oregon Genealogy|Wasco]], [[Umatilla County, Oregon Genealogy|Umatilla]]
| Harney 1889, Wheeler 1899
| [[Harney County, Oregon Genealogy|Harney]] 1889, [[Wheeler County, Oregon Genealogy|Wheeler]] 1899
|-
|-
| [[Harney County, Oregon Genealogy|Harney]]  
| [[Harney County, Oregon|Harney]]  
| 1889 Feb 23  
| 23 Feb1 889
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#HARNEY Details]
| Grant  
| [[Grant County, Oregon Genealogy|Grant]]
| none
| none
|-
|-
| [[Hood River County, Oregon Genealogy|Hood River]]  
| [[Hood River County, Oregon|Hood River]]  
| 1908 Jun 23
| 23 Jun 1908  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#HOOD%20RIVER Details]
| Wasco  
| [[Wasco County, Oregon Genealogy|Wasco]]
| none
| none
|-
|-
| [[Jackson County, Oregon Genealogy|Jackson]]  
| [[Jackson County, Oregon|Jackson]]  
| 1852 Jan 12
| 12 Jan 1852  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#JACKSON Details]
| Umpqua  
| [[Umpqua County, Oregon Genealogy|Umpqua]]
| Coos 1853, Josephine 1856, Lake 1874, Wasco 1854
| [[Coos County, Oregon Genealogy|Coos]] 1853, [[Josephine County, Oregon Genealogy|Josephine]] 1856, [[Lake County, Oregon Genealogy|Lake]] 1874, [[Wasco County, Oregon Genealogy|Wasco]] 1854
|-
|-
| [[Jefferson County, Oregon Genealogy|Jefferson]]  
| [[Jefferson County, Oregon|Jefferson]]  
| 1914 Dec 12
| 12 Dec 1914  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#JEFFERSON Details]
| Crook  
| [[Crook County, Oregon Genealogy|Crook]]
| none
| none
|-
|-
| [[Josephine County, Oregon Genealogy|Josephine]]  
| [[Josephine County, Oregon|Josephine]]  
| 1856 Jan 22
| 22 Jan 1856  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#JOSEPHINE Details]
| Jackson  
| [[Jackson County, Oregon Genealogy|Jackson]]
| none
| none
|-
|-
| [[Klamath County, Oregon Genealogy|Klamath]]  
| [[Klamath County, Oregon|Klamath]]  
| 1882 Oct 17
| 17 Oct 1882  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#KLAMATH Details]
| Lake  
| [[Lake County, Oregon Genealogy|Lake]]
| none
| none
|-
|-
| [[Lake County, Oregon Genealogy|Lake]]  
| [[Lake County, Oregon|Lake]]  
| 1874 Oct 24
| 24 Oct 1874  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#LAKE Details]
| Jackson, Wasco  
| [[Jackson County, Oregon Genealogy|Jackson]], [[Wasco County, Oregon Genealogy|Wasco]]
| Klamath 1882
| [[Klamath County, Oregon Genealogy|Klamath]] 1882
|-
|-
| [[Lane County, Oregon Genealogy|Lane]]  
| [[Lane County, Oregon|Lane]]  
| 1851 Jan 28
| 28 Jan 1851  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#LANE Details]
| Linn, Umpqua  
| [[Linn County, Oregon Genealogy|Linn]], [[Umpqua County, Oregon Genealogy|Umpqua]]
| Wasco 1854
| [[Wasco County, Oregon Genealogy|Wasco]] 1854
|-
|-
| [[Lewis County, Washington Genealogy|Lewis]]  
| [[Lewis County, Washington|Lewis]]  
| 1845 Dec 09
| 09 Dec 1845  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#LEWIS Details]
| Oregon Territory  
| [[Oregon Territory]]
| now in Washington State
| now in [[Washington, United States Genealogy|Washington]] State
|-
|-
| [[Lincoln County, Oregon Genealogy|Lincoln]]  
| [[Lincoln County, Oregon|Lincoln]]  
| 1893 Feb 20
| 20 Feb 1893  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#LINCOLN Details]
| Benton, Polk  
| [[Benton County, Oregon Genealogy|Benton]], [[Polk County, Oregon Genealogy|Polk]]
| none
| none
|-
|-
| [[Linn County, Oregon Genealogy|Linn]]  
| [[Linn County, Oregon|Linn]]  
| 1847 Dec 28
| 28 Dec 1847  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#LINN Details]
| Champoeg  
| [[Champoeg County, Oregon Genealogy|Champoeg]]
| Lane 1851, Umpqua 1851, Wasco 1854
| [[Lane County, Oregon Genealogy|Lane]] 1851, [[Umpqua County, Oregon Genealogy|Umpqua]] 1851, [[Wasco County, Oregon Genealogy|Wasco]] 1854
|-
|-
| [[Malheur County, Oregon Genealogy|Malheur]]  
| [[Malheur County, Oregon|Malheur]]  
| 1887 Feb 17
| 17 Feb 1887  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#MALHEUR Details]
| Baker  
| [[Baker County, Oregon Genealogy|Baker]]
| none
| none
|-
|-
| [[Marion County, Oregon Genealogy|Marion]]  
| [[Marion County, Oregon|Marion]]  
| 1849 Sep 03
| 03 Sep 1849  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#MARION Details]
| renamed from Champoeg  
| renamed from [[Champoeg County, Oregon Genealogy|Champoeg]]
| Wasco 1854
| [[Wasco County, Oregon Genealogy|Wasco]] 1854
|-
|-
| [[Morrow County, Ohio Genealogy|Morrow]]  
| [[Morrow County, Ohio|Morrow]]  
| 1885 Feb 16
| 16 Feb 1885  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#MORROW Details]
| Umatilla  
| [[Umatilla County, Oregon Genealogy|Umatilla]]
| none
| none
|-
|-
| [[Multnomah County, Oregon Genealogy|Multnomah]]  
| [[Multnomah County, Oregon|Multnomah]]  
| 1854 Dec 22
| 22 Dec 1854  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#MULTNOMAH Details]
| Washington, Clackamas  
| [[Washington County, Oregon Genealogy|Washington]], [[Clackamas County, Oregon Genealogy|Clackamas]]
| none
| none
|-
|-
| [[Polk County, Oregon Genealogy|Polk]]  
| [[Polk County, Oregon|Polk]]  
| 1845 Dec 22
| 22 Dec 1845  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#POLK Details]
| Yamhill  
| [[Yamhill County, Oregon Genealogy|Yamhill]]
| Benton 1847, Lincoln 1893, Tillamook 1853
| [[Benton County, Oregon Genealogy|Benton]] 1847, [[Lincoln County, Oregon Genealogy|Lincoln]] 1893, [[Tillamook County, Oregon Genealogy|Tillamook]] 1853
|-
|-
| [[Sherman County, Oregon Genealogy|Sherman]]  
| [[Sherman County, Oregon|Sherman]]  
| 1889 Feb 25
| 25 Feb 1889  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#SHERMAN Details]
| Wasco  
| [[Wasco County, Oregon Genealogy|Wasco]]
| none
| none
|-
|-
| [[Tillamook County, Oregon Genealogy|Tillamook]]  
| [[Tillamook County, Oregon|Tillamook]]  
| 1853 Dec 15
| 15 Dec 1853  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#TILLAMOOK Details]
| Clatsop, Polk, Yamhill  
| [[Clatsop County, Oregon Genealogy|Clatsop]], [[Polk County, Oregon Genealogy|Polk]], [[Yamhill County, Oregon Genealogy|Yamhill]]
| none
| none
|-
|-
| [[Twality County, Oregon Genealogy|Twality]]  
| [[Twality County, Oregon|Twality]]  
| 1843 Jul 05
| 05 Jul 1843  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#TWALITY Details]
| Oregon Territory  
| [[Oregon Territory]]
| renamed Washington 1845
| renamed [[Washington County, Oregon Genealogy|Washington]] 1845
|-
|-
| [[Umatilla County, Oregon Genealogy|Umatilla]]  
| [[Umatilla County, Oregon|Umatilla]]  
| 1862 Sep 27
| 27 Sep 1862  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#UMATILLA Details]
| Wasco  
| [[Wasco County, Oregon Genealogy|Wasco]]
| Grant 1864, Morrow 1885
| [[Grant County, Oregon Genealogy|Grant]] 1864, [[Morrow County, Oregon Genealogy|Morrow]] 1885
|-
|-
| [[Umpqua County, Oregon Genealogy|Umpqua]]  
| [[Umpqua County, Oregon|Umpqua]]  
| 1851 Jan 28
| 28 Jan 1851  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#UMPQUA Details]
| Benton, Linn  
| [[Benton County, Oregon Genealogy|Benton]], [[Linn County, Oregon Genealogy|Linn]]
| Coos 1853, Douglas 1852, Jackson 1852, Lane 1851, dissolved into Douglas 1863
| [[Coos County, Oregon Genealogy|Coos]] 1853, [[Douglas County, Oregon Genealogy|Douglas]] 1852, [[Jackson County, Oregon Genealogy|Jackson]] 1852, [[Lane County, Oregon Genealogy|Lane]] 1851, dissolved into [[Douglas County, Oregon Genealogy|Douglas]] 1863
|-
|-
| [[Union County, Oregon Genealogy|Union]]  
| [[Union County, Oregon|Union]]  
| 1864 Oct 14
| 14 Oct 1864  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#UNION Details]
| Baker  
| [[Baker County, Oregon Genealogy|Baker]]
| Wallowa 1887, Baker 1901
| [[Wallowa County, Oregon Genealogy|Wallowa]] 1887, [[Baker County, Oregon Genealogy|Baker]] 1901
|-
|-
| [[Wallowa County, Oregon Genealogy|Wallowa]]  
| [[Wallowa County, Oregon|Wallowa]]  
| 1887 Feb 11
| 11 Feb 1887  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#WALLOWA Details]
| Union  
| [[Union County, Oregon Genealogy|Union]]
| none
| none
|-
|-
| [[Wasco County, Oregon Genealogy|Wasco]]  
| [[Wasco County, Oregon|Wasco]]  
| 1854 Jan 11
| 11 Jan 1854  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#WASCO Details]
| nowrap="nowrap" | Clackamas, Marion, Linn, Lane, Douglas
| [[Clackamas County, Oregon Genealogy|Clackamas]], [[Marion County, Oregon Genealogy|Marion]], [[Linn County, Oregon Genealogy|Linn]], [[Lane County, Oregon Genealogy|Lane]], [[Jackson County, Oregon Genealogy|Jackson]]
| Baker 1862, Crook 1882, Gilliam 1855, Grant 1864, Hood River 1908, Lake 1874, Sherman 1889, Umatilla 1862
| [[Baker County, Oregon Genealogy|Baker]] 1862, [[Crook County, Oregon Genealogy|Crook]] 1882, [[Gilliam County, Oregon Genealogy|Gilliam]] 1855, [[Grant County, Oregon Genealogy|Grant]] 1864, [[Hood River County, Oregon Genealogy|Hood River]] 1908, [[Lake County, Oregon Genealogy|Lake]] 1874, [[Sherman County, Oregon Genealogy|Sherman]] 1889, [[Umatilla County, Oregon Genealogy|Umatilla]] 1862
|-
|-
| [[Washington County, Oregon Genealogy|Washington]]  
| [[Washington County, Oregon|Washington]]  
| 1845 Dec 22
| 22 Dec 1845  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#WASHINGTON Details]
| renamed from Tuality
| renamed from [[Twality County, Oregon Genealogy|Twality]]
| Columbia 1854, Multnomah 1854
| [[Columbia County, Oregon Genealogy|Columbia]] 1854, [[Multnomah County, Oregon Genealogy|Multnomah]] 1854
|-
|-
| [[Wheeler County, Oregon Genealogy|Wheeler]]  
| [[Wheeler County, Oregon|Wheeler]]  
| 1899 Feb 17
| 17 Feb 1899  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#WHEELER Details]
| Crook, Gilliam, Grant  
| [[Crook County, Oregon Genealogy|Crook]], [[Gilliam County, Oregon Genealogy|Gilliam]], [[Grant County, Oregon Genealogy|Grant]]
| none
| none
|-
|-
| [[Yamhill County, Oregon Genealogy|Yamhill]]  
| [[Yamhill County, Oregon|Yamhill]]  
| 1843 Jul 05
| 05 Jul 1843  
| [https://digital.newberry.org/ahcb/documents/OR_Individual_County_Chronologies.htm#YAMHILL Details]
| Oregon Territory  
| [[Oregon Territory]]
| Polk 1845, Tillamook 1853
| [[Polk County, Oregon Genealogy|Polk]] 1845, [[Tillamook County, Oregon Genealogy|Tillamook]] 1853
|}
|}
==References==
[[Category: United States]]
{{Reflist}}
[[Category: United States County Creations ]]
[[Category:United_States_County_Creations]] [[Category:Oregon, United States]]

Revision as of 21:25, 12 March 2009

Name of County Date Formed Parent County Progeny County
Baker 22 Sep 1862 Wasco Malheur 1887, Union 1864
Benton 23 Dec 1847 Polk Lincoln 1893, Umpqua 1851
Champoeg 05 Jul 1843 Oregon Territory Linn 1847, renamed Marion 1849
Clackamas 05 Jul 1843 Oregon Territory Multnomah 1854, Wasco 1854
Clark 05 Jul 1843 Oregon Territory now in Washington State
Clatsop 22 Jun 1844 Tuality Tillamook 1853
Columbia 16 Jan 1854 Washington none
Coos 22 Dec 1853 Umpqua, Jackson Curry 1855
Crook 24 Oct 1882 Wasco Deschutes 1916, Jefferson 1914, Wheeler 1899
Curry 18 dec 1855 Coos none
Deschutes 13 Dec 1916 Crook none
Douglas 07 Jan 1852 Umpqua Wasco 1854
Gilliam 25 Feb 1885 Wasco Wheeler 1899
Grant 14 Oct 1864 Wasco, Umatilla Harney 1889, Wheeler 1899
Harney 23 Feb1 889 Grant none
Hood River 23 Jun 1908 Wasco none
Jackson 12 Jan 1852 Umpqua Coos 1853, Josephine 1856, Lake 1874, Wasco 1854
Jefferson 12 Dec 1914 Crook none
Josephine 22 Jan 1856 Jackson none
Klamath 17 Oct 1882 Lake none
Lake 24 Oct 1874 Jackson, Wasco Klamath 1882
Lane 28 Jan 1851 Linn, Umpqua Wasco 1854
Lewis 09 Dec 1845 Oregon Territory now in Washington State
Lincoln 20 Feb 1893 Benton, Polk none
Linn 28 Dec 1847 Champoeg Lane 1851, Umpqua 1851, Wasco 1854
Malheur 17 Feb 1887 Baker none
Marion 03 Sep 1849 renamed from Champoeg Wasco 1854
Morrow 16 Feb 1885 Umatilla none
Multnomah 22 Dec 1854 Washington, Clackamas none
Polk 22 Dec 1845 Yamhill Benton 1847, Lincoln 1893, Tillamook 1853
Sherman 25 Feb 1889 Wasco none
Tillamook 15 Dec 1853 Clatsop, Polk, Yamhill none
Twality 05 Jul 1843 Oregon Territory renamed Washington 1845
Umatilla 27 Sep 1862 Wasco Grant 1864, Morrow 1885
Umpqua 28 Jan 1851 Benton, Linn Coos 1853, Douglas 1852, Jackson 1852, Lane 1851, dissolved into Douglas 1863
Union 14 Oct 1864 Baker Wallowa 1887, Baker 1901
Wallowa 11 Feb 1887 Union none
Wasco 11 Jan 1854 Clackamas, Marion, Linn, Lane, Douglas Baker 1862, Crook 1882, Gilliam 1855, Grant 1864, Hood River 1908, Lake 1874, Sherman 1889, Umatilla 1862
Washington 22 Dec 1845 renamed from Tuality Columbia 1854, Multnomah 1854
Wheeler 17 Feb 1899 Crook, Gilliam, Grant none
Yamhill 05 Jul 1843 Oregon Territory Polk 1845, Tillamook 1853
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