According to the definitions of the U.S. Office of Management and Budget (OMB), all of Massachusetts falls within a metropolitan statistical area (MSA), except for the offshore islands of Martha's Vineyard and Nantucket. According to 2005 Census estimates, 62% of the population of Massachusetts lives within the Boston MSA. Other Massachusetts metropolitan areas are the Worcester MSA (with 12% of the state's population), the Springfield MSA (11%), the Providence-Fall River-New Bedford MSA (9%), the Barnstable (Cape Cod) MSA (4%), and the Pittsfield MSA (2%).