This is good information. I am a home owner in Wilsonville which is still in the Portland Metro area. This town's population is exploding and so are the home prices. Lots of rentals going in which is making the local/long term home owners upset due mainly to an increase in traffic. The social media chatter for this area at least is that California big rental companies are buying up the smaller ones and people's rent are going up as leases get renewed, which of course is either driving people out or they are reluctantly paying it. But, for every 1 person that leaves it seems 2 are moving in.
Wilsonville has been building the Villebois Community for the past 12 years which has about doubled its population. This is on the West side of I5. Wilsonville use to have more jobs here then people living here. Now, they are about to build another community on the East side and are currently breaking ground on a new middle school. Wilsonville shares its school district with West Linn.
Newberg/Dundee area on the West side - with the addition of the Newberg/Dundee bypass and with the amount of wineries in the area - it may be something to look at. I don't have the stats on these so take it as you will. Wilsonville schools have been ranked very high.
Just food for thought...I am no pro but am looking into rentals in the local area myself but have no rentals at this point. Good luck!
Bill