CALIFORNIA EXODUS
Even though they're still rolling out the streets in our town, California as a whole is experiencing a negative net migration. That is, if you don't count all of the people coming to California from other countries, more people move from our state than into it. It has to do with economics (or maybe all these people are afraid that if they stay they'll have to run for governor like everyone else). Link (Thanks, Rudy)

Monstermoving.com has a great little tool for comparing two cities of your choice. Link