There is a wealth of information and statistics regarding the labor force. From the unemployment rate (one of the most watched statistic measuring an area’s economy) to wages data by occupation, the amount of data seems endless. Here are some links to key workforce barometers of an area’s economic efficiency. However, please keep in mind that these numbers are statistical estimates, subject to sampling and error margins (the smaller the geographical area, generally the larger the error).
 

Unemployment Rates, Employment Estimates, Occupational Projections, Productivity Measures (National and Selected Areas), and Wage Rates: 

     National, State, Metro Area, and County – www.bls.gov and www.sces.org

Economic Information:

     Economic Indicators – www.economicindicators.gov, www.nber.org/data, and www.gpoaccess.gov/indicators

     General Economic Data – www.bea.gov, www.bls.gov/lpc, www.census.gov/econ, www.conference-board.org, www.economagic.com, and www.economy.com/freelunch

Census Data:

     Miscellaneous National, State, and Local – www.census.gov and www.lehd.dsd.census.gov/led

Workforce Information:

     Workforce Information Portal – www.workforceinfo.org

     Other Workforce Data – www.acinet.org, www.onetcenter.org, www.workforceatm.org, and www.workforce3one.org