A finer-grained statistical unit than the MSA is the New England City and Town Area, or NECTA. NECTAs take advantage of the administrative subdivision of the entire territory of Massachusetts and other New England states into towns and cities. (No part of Massachusetts is unincorporated county territory.) Each NECTA consists of a cluster of cities and towns defined by commuting patterns, which therefore correspond roughly to local labor markets. While the U.S. Census Bureau defines metropolitan areas by county boundaries, the U.S. Bureau of Labor Statistics (BLS) offers data on employment by NECTA.