I've been following this trend on Indeed.com, a job search aggregation site -- First I search "user experience design" and look at where the positions are (this is a mix of consulting/full time and part time). For a while now, there have been tons of openings NYC! As you can see from the screenshot above, NYC has more than double the UX openings. San Francisco's number is on par with Chicago, DC, and yes, Atlanta, Georgia.
For a while now I've been noticing tons of UX's form NYC & they have a slick style! NYC seems more Hulu while Silicon Valley is more Youtube. Check out Squarespace and compare it to Weebly.