Oregon Constitutional Convention
| Seal of the Oregon Territory | |
| Date | August 17 to September 18, 1857 | 
|---|---|
| Location | Salem, Oregon North America | 
| Also known as | Constitutional Convention of 1857 | 
| Participants | see below | 
| Outcome | Created Oregon Constitution | 
The Oregon Constitutional Convention in 1857 drafted the Oregon Constitution in preparation for the Oregon Territory to become a U.S. state. Held from mid-August through September, 60 men met in Salem, Oregon, and created the foundation for Oregon's law. The proposal passed with a vote of 35 for adoption to 10 against. Oregon then became the 33rd state of the Union on February 14, 1859.