The Litchfield Hills (... known as the Northwest Hills or simply The Foothills) is a geographic region of the U.S. state of Connecticut located in the northwestern corner of the state. It is a term that is roughly coterminous with the boundaries of Litchfield County, for which it is named. The geographic region includes two officially designated regions: rural Northwestern Connecticut, and the area associated with the city of Torrington (also known as the Upper Naugatuck River Valley or simply Litchfield Hills).