Massachusetts is currently divided into 9 congressional districts, each represented by a member of the United States House of Representatives. After the 2010 census, the number of Massachusetts's seats was decreased from 10 to 9, due to the State's low growth in population since the year 2000. This mandatory redistricting after the 2010 census eliminated Massachusetts's 10th congressional district, and also caused a major shift in how the state's congressional districts are currently drawn. Current districts and representatives List of members of the United States House delegation from Massachusetts in the 118th Congress, their terms, their district boundaries, and the district political ratings, according to the CPVI. The delegation has a total of 9 members, all of whom are members of the Democratic party. Enumeration trends After the 1890 census, and starting with the 53rd United States Congress in 1893, Massachusetts's congressional districts were numbered west to east, with the in the west (Berkshire County) and the highest numbered district at Cape Cod. Before then, the district numeration was not as consistent; sometimes running east to west, other times going counter-clockwise around Boston. History of apportionment Source: U.S. Census Bureau. Historical and present district boundaries Table of United States congressional district boundary maps in the State of Massachusetts, presented chronologically. All redistricting events that took place in Massachusetts between 1973 and 2013 are shown. See also List of United States congressional districts Notes References Further reading 19th century 20th century 21st century External links Massachusetts Congressional Districts map, 2004