The Portland State University Population Research Center reports just out figure Oregon has added about 50,000 people between the summer of 2004 and the summer of 2005, and about 200,000 people since the 2000 census.
Sounds about right, as do the estimates of where in the state, exactly, these people have been going. The standout really is Washington County, which is estimated to have added more than 9,000 people just in that recent year, and nearly 45,000 since the 2000 census (meaning, practically, at least 50,000 from then to now - about a quarter of all growth in the state). That's a big boost in size, even if - proportionately - Deschutes County (Bend ) did about as well or better. The other Portland-area suburban county, Clackamas, also grew but more slowly.
Portland continues to grow, adding about 5,000 people in just the recent year to reach 555,560. Salem pushes a little further ahead of Eugene; the cities are still close in population but no longer virtually tied. And Gresham is edging close to the 100,000 mark.