According to data from the US BLS, the unemployment rate of Connecticut was 9.5% (sa) in January, 2010. Among all Connecticut counties, these 3 were among those with high unemployment rates (nsa): Windham (11.7%), New Haven (11%), and Hartford (10.6%).

On the hand, the following three counties were among those with low unemployment rates (nsa): Tolland (8.9%), Middlesex (9%), and Fairfield (9.5%).

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

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