This data represents a boundary file of 21 towns and cities that fall within MAPC's ICC designation, including Arlington, Belmont, Boston, Brookline, Cambridge, Chelsea, Everett, Lynn, Malden, Medford, Melrose, Milton, Needham, Newton, Quincy, Revere, Saugus, Somerville, Waltham, Watertown, and Winthrop.
This dataset is part of the LMEC's [Cartography Challenges](https://leventhalmap.org/projects/cartography-challenge).