I don't live in Corvallis, but worked there for years & am there al the time since it has the amenities that we need that our rural town doesn't have.
There's a pretty big Food Not Lawns movement in Corvallis, folks have taken out their lawns & are growing food instead of grass & there is a yearly backyard chicken coop tour. It's my understanding that if chickies are penned & there are no roosters it's an unlimited number that can be kept (double check tho!).
It's a college town, so every September a large population of kids converge on the town & there's the typical college town issues (drinking, parties, football games, traffic, etc). But it's not so out of control that it's a horrible place, I just make sure to time things around games so I'm not stuck in traffic or get stuck trying to go out for dinner when there's big events going on.
There's a really great Crunchy vibe, lots of good places to spend time with family & kids activities. Housing is higher than some of the other closer towns mentioned above, but there are a lot of areas that are walkable/bikeable which is super nice. Some pretty good places to eat & a Co-op that's amazing for organic/local foods.
If you are thinking of renting there is a company locally that you should look in to before you rent from them, pm me & I will give you more info.