According to data from the US BLS, the unemployment rate of Connecticut was 8.4% (sa) in August, 2012. Among all Connecticut counties, these 3 were among those with high unemployment rates (nsa): Windham (9.8%), New Haven (9.5%), and Hartford (9.1%).

On the hand, the following three counties were among those with low unemployment rates (nsa): Tolland (7.6%), Middlesex (7.6%), and Litchfield (7.8%).

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

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