According to data from the US BLS, the unemployment rate of Connecticut was 9.5% (sa) in September, 2010. Among all Connecticut counties, these 3 were among those with high unemployment rates (nsa): Windham (10.5%), New Haven (10.3%), and Hartford (9.6%).

On the hand, the following three counties were among those with low unemployment rates (nsa): Tolland (7.6%), Middlesex (7.8%), and Litchfield (8.6%).

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

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