TIGER/Line Shapefile, 2015, nation, U.S., Current NECTA Division National

The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the
U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents
a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data
set, or they can be combined to cover the entire nation.

           New England City and Town Area (NECTA) Divisions subdivide a NECTA containing a single core urban area that has a population of at least 2.5 million to
           form smaller groupings of cities and towns.  NECTA Divisions are defined by the Office of Management and Budget (OMB) and consist of a main city or town
           that represents an employment center, plus adjacent cities and towns associated with the main city or town through commuting ties.  Each NECTA Division
           must contain a total population of 100,000 or more.  Because NECTA Divisions represent subdivisions of larger NECTAs, it is not appropriate to rank or
           compare NECTA Divisions with NECTAs.  Not all NECTAs with urban areas of this size will contain NECTA Divisions.

           The NECTA Divisions boundaries are those defined by OMB based on the 2010 Census and published in 2013.