According to data from the US BLS, the unemployment rate of Connecticut was 8.3% (sa) in January, 2013. Among all Connecticut counties, these 3 were among those with high unemployment rates (nsa): Windham (10.8%), New Haven (9.8%), and New London (9.6%).

On the hand, the following three counties were among those with low unemployment rates (nsa): Middlesex (8%), Tolland (8.2%), and Fairfield (8.5%).

The chart and table below shows the unemployment rate (nsa) for each county.

You can see similar information by state for the United States.