New England town the Massachusetts Constitution requires a town to have a population of at least 10,000 people before it can switch its government from a town meeting form to a city form. Nevertheless, even without a hard and fast population limit for city status, the practical threshold to become a city seems to be higher in the three southern New England states than in the three northern New England states. In Massachusetts, Connecticut and Rhode Island, almost every city has at least 10,000 people, and all but a few have at least 20,000. In Maine, New Hampshire and Vermont, however, there are
New England areas of production. Maine is ranked ninth for aquaculture, and has abundant potato fields in its northeast part. Vermont is fifteenth for dairy products, and Connecticut and Massachusetts seventh and eleventh for tobacco, respectively. Cranberries are grown in Massachusetts' Cape Cod-Plymouth-South Shore area, and blueberries in Maine. The region is mostly energy-efficient compared to the U.S. at large, with every state but Maine ranking within the ten most energy-efficient states; every state in New England also ranks within the ten most expensive states for electricity prices. As of January 2017, employment is stronger in New England than in the rest