- 1850: 12,093
- 1860: 52,465
- 1870: 90,923
- 1880: 174,768
- 1890: 317,704
- 1900: 413,536
- 1910: 672,765
- 1920: 783,389
- 1930: 953,786
- 1940: 1,089,684
- 1950: 1,521,341
- 1960: 1,768,687
- 1970: 2,091,533
- 1980: 2,633,156
- 1990: 2,842,321
- 2000: 3,421,399
- 2009: 3,825,657
- Ristian: % 67
- Protestan: % 47
- Evangelical: % 30
- Mainline: % 16
- Başka Protestan: % 1
- Roman Katolit: % 14
- Mormon: % 5
- Başka Ristian: % 1
- Tayfe: % 27
- Budist: % 2
- Çıfıt: 1
- İslam: % 0.5
- Başka Dinler: % 2
| Kasaba | İstoriya | Nüfus |
|---|
| Baker City | 1862 | 16,741 |
| Corvallis | 1847 | 78,153 |
| Oregon City | 1843 | 338,391 |
| Sent Helens | 1854 | 43,560 |
| Coquille | 1853 | 62,779 |
| Prineville | 1882 | 19,182 |
| Gold Beach | 1855 | 21,137 |
| Bend | 1916 | 115,367 |
| Roseburg | 1852 | 100,399 |
| Condon | 1885 | 1,915 |
| Canyon City | 1864 | 7,935 |
| Burns | 1889 | 7,609 |
| Hoon River | 1908 | 20,411 |
| Medfort | 1852 | 202,310 |
| Madras | 1914 | 19,009 |
| Grants Pass | 1856 | 75,726 |
| Klamath Falls | 1882 | 63,775 |
| Lakeview | 1874 | 7,422 |
| Eugene | 1851 | 322,959 |
| Newport | 1893 | 44,479 |
| Albany | 1847 | 103,069 |
| Vale | 1887 | 31,615 |
| Salem | 1843 | 284,834 |
| Heppner | 1885 | 10,995 |
| Portland | 1864 | 660,486 |
| Dallas | 1845 | 62,380 |
| Moro | 1889 | 1,934 |
| Tillamook | 1853 | 1,853 |
| Pendleton | 1862 | 70,548 |
| La Grande | 1864 | 24,530 |
| Enterprise | 1887 | 7,226 |
| The Dalles | 1854 | 7,226 |
| Hillsboro | 1843 | 445,342 |
| Fossil | 1899 | 1,547 |
| McMinnville | 1843 | 84,992 |
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