Chicago, Minneapolis BUT let me tell you that most PR firms and PR departments in even big companies have downsized so significantly that not much in the line of jobs. While you might prefer living in a particular area - you really need to focus on job first - and make the best choice between offers if you get any.
I go for Houston - lots of important jobs - a serious place, Austin is real nice and not far away. There are some very nice places to visit in Houston,Texas
Washington DC has the least crummy job market in the US right now.
Check out Dallas, Fort Worth or Austin...all in Texas.