The Bureau of Labor Statistics delivered some good news last week: unemployment rates for September 2012 were lower than they were in September 2011 in a substantial majority of metropolitan areas (345 out of 372). The overall unemployment rate dropped from 8.8 percent last year to 7.6 percent in September. And 41 of the metropolitan areas around the country have unemployment rates under 5%. It’s hard to get unemployment much lower than that. One of the areas with the lowest unemployment rates is the Bethesda-Rockville-Frederick metropolitan division.