Greater Boston is the metropolitan region of New England encompassing the municipality of Boston, the capital of the U.S. state of Massachusetts and the most populous city in New England, as well as its surrounding areas. The region forms the northern arc of the US northeast megalopolis and as such, Greater Boston can be described either as a metropolitan statistical area (MSA), or as a broader combined statistical area (CSA). The MSA consists of most of the eastern third of Massachusetts, excluding the South Coast region and Cape Cod; while the CSA additionally includes the municipalities of Manchester (the largest city in the U.S. state of New Hampshire), Worcester, Massachusetts (the second largest city in New England), as well as the South Coast region and Cape Cod in Massachusetts. While the small footprint of the city of Boston itself only contains an estimated 685,094, the urbanization has extended well into surrounding areas; the CSA is one of two in Massachusetts, the only other being Greater Springfield. Greater Boston is the only CSA-form statistical area in New England which crosses into three states (Massachusetts, New Hampshire and Rhode Island).