Median house value in Boulder proper is like $900k or something insane. You can still find cheap housing but it likely won't last due to high population growth. If you want to rent, bring a check for the deposit when touring so you can lock it down right away, otherwise you'll lose it.

Other than that, I'm not sure. Everywhere except Colorado Springs is pretty liberal, which not everyone loves. We've also gotten a lot more homeless people since weed was legalized.