The U.S. state of Oregon is divided into 36 Counties. Explore the Oregon County Map, all Counties list along with their County Seats in alphabetical order and their population, areas and the date of formation.
Oregon County Map

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About Counties of Oregon
U.S State of Oregon is situated in the western part of the country. Oregon joined in the Union and became one of the states of United States in the year 1859. It was the thirty third state to join in the Union. The state of Oregon is the 9th largest state in its size and 27th populous state among 50 states. The capital city of the state is Salem. U.S state of Oregon is indeed blessed with a lot of water resources, everlasting green forests, deserts, shrub lands and volcanoes. The unofficial nickname of the state is The Beaver State. The largest city of the state is Portland as it is the most populous city.
Oregon Counties are 36 in number. Among counties of Oregon, only 9 counties have the authority to change their county government. All the other counties to be specific 28 Oregon Counties are administered by a board of commissioners. This board of commissioners consists of three to five elected members. There are 242 incorporated cities in the state of Oregon which are governed by city councils that are considered as the highest authority within the city government. The city government provides a lot of services like streets and street maintenance, sewer and water management, building permissions, libraries, parks, protection for the people and many more.
The largest county by area in the state of Oregon is Harney which occupies 10,133.16 square miles in geographical space in the state. Malheur is the second biggest county in terms of its size. The tiniest county in Oregon is Multnomah County with 465 square miles. There is a speciality in Wheeler County as it is the oldest county among Oregon Counties; it is least populated county in the state. Multnomah County has the highest number of population in the state with 820,421 which is in fact most populous county in Oregon. In terms of highly populated counties after Multnomah are Washington County with 610,968 and Clackamas County with 423,729. Of Oregon Counties the richest county is Clackamas County as it has $31,785 per capita income. Washington and Multnomah stand second and third highest per capita earning counties with $ 30,522 and $28,883 respectively. Malheur County is the poorest County in the state of Oregon.
The U.S. state of Oregon has 36 Counties. This is list of Oregon Counties and County Seats in alphabetical order along with check their population, areas and the date of formation.
List of Counties in Oregon with County Seats
S.N | County | County Seat | Population | Area | Formed |
---|---|---|---|---|---|
1 | Baker County | Baker City | 16,280 | 3,068 sq mi | 1862 |
2 | Benton County | Corvallis | 87,725 | 676 sq mi | 1847 |
3 | Clackamas County | Oregon City | 386,080 | 1,868 sq mi | 1843 |
4 | Clatsop County | Astoria | 37,270 | 827 sq mi | 1844 |
5 | Columbia County | Saint Helens | 49,850 | 657 sq mi | 1854 |
6 | Coos County | Coquille | 62,860 | 1,600 sq mi | 1853 |
7 | Crook County | Prineville | 20,690 | 2,980 sq mi | 1882 |
8 | Curry County | Gold Beach | 22,300 | 1,627 sq mi | 1855 |
9 | Deschutes County | Bend | 162,525 | 3,018 sq mi | 1916 |
10 | Douglas County | Roseburg | 108,850 | 5,037 sq mi | 1852 |
11 | Gilliam County | Condon | 1,945 | 1,204 sq mi | 1885 |
12 | Grant County | Canyon City | 7,435 | 4,529 sq mi | 1864 |
13 | Harney County | Burns | 7,260 | 10,135 sq mi | 1889 |
14 | Hood River County | Hood River | 23,295 | 522 sq mi | 1908 |
15 | Jackson County | Medford | 206,310 | 2,785 sq mi | 1852 |
16 | Jefferson County | Madras | 22,040 | 1,781 sq mi | 1914 |
17 | Josephine County | Grants Pass | 82,815 | 1,640 sq mi | 1856 |
18 | Klamath County | Klamath Falls | 66,810 | 5,945 sq mi | 1882 |
19 | Lake County | Lakeview | 7,895 | 7,940 sq mi | 1874 |
20 | Lane County | Eugene | 356,125 | 4,554 sq mi | 1851 |
21 | Lincoln County | Newport | 46,560 | 980 sq mi | 1893 |
22 | Linn County | Albany | 118,665 | 2,291 sq mi | 1847 |
23 | Malheur County | Vale | 31,440 | 9,888 sq mi | 1887 |
24 | Marion County | Salem | 322,880 | 1,185 sq mi | 1843 |
25 | Morrow County | Heppner | 11,425 | 2,033 sq mi | 1885 |
26 | Multnomah County | Portland | 756,530 | 435 sq mi | 1854 |
27 | Polk County | Dallas | 77,065 | 741 sq mi | 1845 |
28 | Sherman County | Moro | 1,780 | 823 sq mi | 1889 |
29 | Tillamook County | Tillamook | 25,375 | 1,102 sq mi | 1853 |
30 | Umatilla County | Pendleton | 77,895 | 3,215 sq mi | 1862 |
31 | Union County | La Grande | 26,325 | 2,037 sq mi | 1864 |
32 | Wallowa County | Enterprise | 7,045 | 3,145 sq mi | 1887 |
33 | Wasco County | The Dalles | 25,810 | 2,381 sq mi | 1854 |
34 | Washington County | Hillsboro | 550,990 | 724 sq mi | 1843 |
35 | Wheeler County | Fossil | 1,430 | 1,715 sq mi | 1899 |
36 | Yamhill County | McMinnville | 101,400 | 716 sq mi | 1843 |
- Baker County Map
- Benton County Map
- Clackamas County Map
- Clatsop County Map
- Columbia County Map
- Coos County Map
- Crook County Map
- Curry County Map
- Deschutes County Map
- Douglas County Map
- Gilliam County Map
- Grant County Map
- Harney County Map
- Hood River County Map
- Jackson County Map
- Jefferson County Map
- Josephine County Map
- Klamath County Map
- Lake County Map
- Lane County Map
- Lincoln County Map
- Linn County Map
- Malheur County Map
- Marion County Map
- Morrow County Map
- Multnomah County Map
- Polk County Map
- Sherman County Map
- Tillamook County Map
- Umatilla County Map
- Union County Map
- Wallowa County Map
- Wasco County Map
- Washington County Map
- Wheeler County Map
- Yamhill County Map
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Written and Fact-checked by Whereig Web Team | Last Updated: January 13, 2024, 01:05 PM ET