David Mihm and the folks at Moz released their 2013 local search ranking factors last night. They polled dozens of local SEO experts on 104 different ranking factors and asked hundreds of questions to come up with this report.
You can read the details at moz.com/local-search-ranking-factors but here is just an overview chart:
Chuck Finley at Cre8asite Forums said, "For those of you that are interested in tapping into Local, this is the Bible. It's all in there!"
Forum discussion at Cre8asite Forums.