Oregon Territory Oregon Territory The Territory of Oregon was an organized incorporated territory of the United States that existed from August 14, 1848, until February 14, 1859, when the southwestern portion of the territory was admitted to the Union as the State of Oregon. Originally claimed by several countries (see Oregon Country), the region was divided between the UK and US in 1846. When established, the territory encompassed an area that included the current states of Oregon, Washington, and Idaho, as well as parts of Wyoming and Montana. The capital of the territory was first Oregon City, then Salem, followed briefly by
Flag of Oregon Flag of Oregon The flag of the state of Oregon is a two-sided flag in navy blue and gold with an optional gold fringe. On the front is the escutcheon from the state seal and on the reverse is a gold figure of a beaver, the state animal. Oregon is the only state to feature a double-sided flag (the flag of Massachusetts was changed in 1971 to be single-sided). The current flag of Oregon became official on February 26, 1925. What is believed to be the first flag of Oregon produced was made that year by Meier & Frank, sewn