Woonsocket, is a city in Providence County, Rhode Island, United States. The population was 43,240 at the 2020 census, making it the sixth largest city in the state. Being Rhode Island's northernmost city, Woonsocket lies directly south of the Massachusetts state line and constitutes part of both the Providence metropolitan area and the larger Greater Boston Combined Statistical Area. The city is the corporate headquarters of CVS Health, a pharmacy services provider.