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Background • Federal Census Summary • State Map with County Boundaries • Counties • Links to State Resources Background
The Oregon region was long in dispute with Great Britain, and was jointly occupied by the two countries until definitively acquired by the United States in 1846. Oregon was established as a territory in 1848, including present-day Washington, Idaho, and parts of Montana and Wyoming. It acquired its present boundaries and was admitted as a State on February 14, 1859.
| Capital: Salem | Total Area: 98,466 sq mi | ||
| Latitude: 42°N to 46°15'N | Longitude: 116°45'W to 124°30'W | ||
| Last Significant Boundary Change: 1860 | |||
In 1850 the census covered only areas west of the Cascade Mountains; the 1850 total excludes persons enumerated in present-day Washington. In 1860 census coverage included the whole State.
| 1790: --- | 1800: --- | 1810: --- | 1820: --- |
| 1830: --- | 1840: --- | 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: 2,091,385 | 1980: 2,633,105 |
| 1990: 2,842,321 | 2000: 3,421,399 |