Fairfield, New Haven, and Litchfield Counties are in western Connecticut. Large business and industrial parks are scattered throughout the area, though mostly contained within Fairfield County. The three counties (and Connecticut in general) are known for affluence. Geographically, the areas are flat along the coast with low hills eventually giving way to larger hills such as The Berkshires further inland, to the Massachusetts border. Most of the largest cities in the state are located within New Haven County (home to Yale University ) and Fairfield County.