Oregon Population by County:
1970 and 1995
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| 1970 | 1995 | |
| STATEWIDE | 2,091,385 | 3,181,000 |
| Baker | 14,919 | 16,500 |
| Benton | 53,776 | 76,000 |
| Clackamas | 166,088 | 313,200 |
| Clatsop | 28,473 | 34,600 |
| Columbia | 28,790 | 40,100 |
| Coos | 56,515 | 61,700 |
| Crook | 9,985 | 15,900 |
| Curry | 13,006 | 22,000 |
| Deschutes | 30,442 | 98,000 |
| Douglas | 71,743 | 98,600 |
| Gilliam | 2,342 | 1,900 |
| Grant | 6,996 | 8,100 |
| Harney | 7,215 | 7,500 |
| Hood River | 13,187 | 19,000 |
| Jackson | 94,533 | 168,000 |
| Jefferson | 8,548 | 16,900 |
| Josephine | 35,746 | 72,000 |
| Klamath | 50,021 | 61,600 |
| Lake | 6,343 | 7,550 |
| Lane | 213,358 | 305,800 |
| Lincoln | 25,755 | 42,200 |
| Linn | 71,914 | 100,000 |
| Malheur | 23,169 | 28,700 |
| Marion | 151,309 | 262,800 |
| Morrow | 4,465 | 9,000 |
| Multnomah | 556,667 | 636,000 |
| Polk | 35,349 | 56,300 |
| Sherman | 2,139 | 1,900 |
| Tillamook | 17,930 | 23,800 |
| Umatilla | 44,923 | 65,500 |
| Union | 19,377 | 24,500 |
| Wallowa | 6,247 | 7,250 |
| Wasco | 20,133 | 22,500 |
| Washington | 157,920 | 376,500 |
| Wheeler | 1,849 | 1,600 |
| Yamhill | 40,213 | 77,500 |