Actually, here is a list. It's not specific to white collar jobs, but I imagine it's a good indicator of which areas are providing the most opportunities
Unemployment Rates for Large Metropolitan Areas
Monthly Rankings
Not Seasonally Adjusted
May 2013
Rank Metropolitan Area Rate
1 Minneapolis-St. Paul-Bloomington, MN-WI Metropolitan Statistical Area 4.7
2 Oklahoma City, OK Metropolitan Statistical Area 5.0
3 Seattle-Tacoma-Bellevue, WA Metropolitan Statistical Area 5.2
4 Austin-Round Rock-San Marcos, TX Metropolitan Statistical Area 5.4
5 Birmingham-Hoover, AL Metropolitan Statistical Area 5.5
6 Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area 5.6
7 Columbus, OH Metropolitan Statistical Area 6.0
7 Richmond, VA Metropolitan Statistical Area 6.0
7 San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area 6.0
10 Boston-Cambridge-Quincy, MA-NH Metropolitan NECTA 6.1
10 Virginia Beach-Norfolk-Newport News, VA-NC Metropolitan Statistical Area 6.1
http://www.marketplace.org/topics/economy/minneapolis-has-lowest-unemployment-rate-major-us-city