There are at least a dozen very active participants in WikiProject Oregon.  You can find info on many of them under "Introduce Yourself" hot-button in "Participants" section on the WikiProj Oregon home page.  Number of those who introduce themselves never become active, but most of the active players have signed in there.  You can identify many of the active Wiki-Oregon players by following discussions on the WikiProj Oregon talk page as well.  In addition, there’s a home page called About us which has some additional info on Wiki-Oregon community/players/interests.  Here’s team photo from that site.  Finally, there's a Wiki-Oregon Blog.  It advertises an after-work "Wiki-Wednesday" get-together at the Backspace Coffee Shop in Portland.  I’ve never attended since I don’t live in Oregon right now.  Recommend you make some inquires either on blog site or WikiProj Oregon discussion page before showing up…just to be sure it’s still happening. Among the most active Wiki Oregon editors are: 

Hope this is helpful.