According to data from the US BLS, the unemployment rate of Connecticut was 9.6% (sa) in April, 2010. Among all Connecticut counties, these 3 were among those with high unemployment rates (nsa): Windham (10.3%), New Haven (10.2%), and Hartford (9.6%).

On the hand, the following three counties were among those with low unemployment rates (nsa): Tolland (7.9%), Middlesex (8.4%), and Fairfield (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.