I'll agree with someone else who said "they're in demand everywhere" - but just like Miami, FL its not one of the top destinations. Also, what type of driving are we talking ? Over the road ? Intermodal ? Regionally with a private fleet ? Local delivery with a parcel carrier ?
All of these questions are relevant. If your going to work for a common carrier, Colorado is not known as a manufacturing state (as opposed to IN, OH, PA). I'm sure with a clean record and a little bit of experience you can get hired about anywhere, but exactly what type of driving you'll be doing is another story. TX has a lot of positions open right now in various types of work -- Dallas and Houston especially.