That price would definately buy a house in any area of wa, except possibly the big cities, even there, it may be enough. For an investment, i would rather buy a couple (or even several houses, or a duplex) for that amount. The profits would be higher. But everyone has their own niche! ;-) I like areas that are growing, not shrinking, there are quite a few itty bitty towns I'd personally stay away from for that reason. Small towns that are growing are fine, though. I don't think there are any golden areas that climb in value hand over fist, and if there were, it could plunge just as fast. But I'm not familiar with the entire state by any means.
Yakima is sooo tempting , because of the prices, but my husband knows the area, and its pretty rough, so we don't consider it.
Walla walla has a couple colleges, and therefore needs lots of rentals, yet still has remotely reasonable housing prices. They have a nice low vacancy rate there.
I'm assuming you going to "buy and hold"? If so, definitely look into rent prices. I was shocked once, at how low they were in this one little town we looked into. Good luck! Keep us posted!