Oregon
»
Baker County
14
»
Benton County
57
»
Clackamas County
90
»
Clatsop County
61
»
Columbia County
12
»
Coos County
53
»
Crook County
6
»
Curry County
45
»
Deschutes County
44
»
Douglas County
51
»
Gilliam County
4
»
Grant County
9
»
Harney County
7
»
Hood River County
35
»
Jackson County
153
»
Jefferson County
7
»
Josephine County
64
»
Klamath County
29
»
Lake County
19
»
Lane County
137
»
Lincoln County
35
»
Linn County
71
»
Malheur County
17
»
Marion County
120
»
Morrow County
5
»
Multnomah County
618
»
Polk County
28
»
Sherman County
5
»
Tillamook County
30
»
Umatilla County
43
»
Union County
19
»
Wallowa County
22
»
Wasco County
32
»
Washington County
50
»
Wheeler County
2
»
Yamhill County
84
»
Baker County
63
»
Benton County
40
»
Clackamas County
87
»
Clatsop County
61
»
Columbia County
9
»
Coos County
25
»
Crook County
3
»
Curry County
22
»
Deschutes County
63
»
Douglas County
28
»
Gilliam County
2
»
Grant County
29
»
Harney County
2
»
Hood River County
29
»
Jackson County
110
»
Jefferson County
11
»
Josephine County
35
»
Klamath County
93
»
Lake County
37
»
Lane County
85
»
Lincoln County
34
»
Linn County
5
»
Malheur County
23
»
Marion County
22
»
Morrow County
3
»
Multnomah County
27
»
Polk County
6
»
Sherman County
3
»
Tillamook County
17
»
Umatilla County
68
»
Union County
12
»
Wallowa County
20
»
Wasco County
59
»
Washington County
2
»
Wheeler County
10
»
Yamhill County
7
»
Baker County
»
Benton County
»
Clackamas County
»
Clatsop County
»
Columbia County
»
Coos County
»
Crook County
»
Curry County
»
Deschutes County
»
Douglas County
»
Gilliam County
»
Grant County
»
Harney County
»
Hood River County
»
Jackson County
»
Jefferson County
»
Josephine County
»
Klamath County
»
Lake County
»
Lane County
»
Lincoln County
»
Linn County
»
Malheur County
»
Marion County
»
Morrow County
»
Multnomah County
»
Polk County
»
Sherman County
»
Tillamook County
»
Umatilla County
»
Union County
»
Wallowa County
»
Wasco County
»
Washington County
»
Wheeler County
»
Yamhill County
Brief timeline of the history of the state of Oregon:
- 10,000 BCE: Paleo-Indian cultures inhabit the region, hunting and gathering along the Columbia River and its tributaries.
- 1792: The British explorer Robert Gray becomes the first recorded European to sail into the Columbia River, claiming the area for the United States.
- 1805-1806: The Lewis and Clark Expedition, commissioned by President Thomas Jefferson, explores the Oregon region, mapping the area and establishing relations with Native American tribes.
- 1811: John Jacob Astor's Pacific Fur Company establishes Fort Astoria, the first permanent European-American settlement in Oregon.
- 1843: A group of pioneers, known as the "Great Migration of 1843," begins settling in the Willamette Valley, establishing the foundation for future settlements.
- 1846: The Oregon Treaty is signed between the United States and Britain, establishing the 49th parallel as the northern border between the United States and Canada and giving the majority of Oregon to the United States.
- 1859: Oregon becomes the 33rd state of the United States.
- Late 19th century: The discovery of gold and other natural resources in Oregon attracts prospectors and settlers to the region.
- 1887: The construction of the Oregon Railway and Navigation Company's railroad line connects Oregon to the transcontinental railroad network, boosting economic growth and facilitating transportation.
- Early 20th century: The construction of hydroelectric dams, including the Bonneville Dam on the Columbia River, provides electricity and supports the development of industry and agriculture in Oregon.
- 1937: The completion of the Historic Columbia River Highway, known for its scenic beauty and waterfalls, becomes a popular tourist attraction.
- 1971: The state of Oregon pioneers the Bottle Bill, becoming the first state in the United States to implement a bottle deposit system to encourage recycling.
- 1994: Oregon legalizes physician-assisted suicide, known as the Death with Dignity Act, becoming the first state to do so.