This article shows U.S. Census totals for Suffolk County, Massachusetts, broken down by municipality, from 1900 to 2010.

Like most areas of New England

New England

New England is a region in the northeastern corner of the United States consisting of the six states of Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, and Connecticut...

, Suffolk County

Suffolk County, Massachusetts

Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...

 is (and has been at all times since well before the 20th century) entirely divided into incorporated municipalities. There is no unincorporated territory. For any census, adding up the totals for each municipality should yield the county total.

There are two types of municipalities in Massachusetts, towns and cities. The tables below differentiate between towns and cities.

For more information on the New England municipal system, see New England town

New England town

The New England town is the basic unit of local government in each of the six New England states. Without a direct counterpart in most other U.S. states, New England towns are conceptually similar to civil townships in other states, but are incorporated, possessing powers like cities in other...

.

Corporate changes since 1900

• 1912 - Boston annexed the town of Hyde Park (which was in neighboring Norfolk County; upon Hyde Park’s annexation by Boston, its territory became part of Suffolk County).

• 1914 - Revere became a city.

1900

Municipality	Population	Type
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	611,417	County
Boston	560,892	City
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	34,072	City
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	10,395	Town
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	6,058	Town

1910

Municipality	Population	Type
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	731,388	County
Boston	670,585	City
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	32,452	City
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	18,219	Town
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	10,132	Town

1920

Municipality	Population	Type
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	835,522	County
Boston	748,060	City
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	43,184	City
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	28,823	City
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	15,455	Town

1930

Municipality	Population	Type
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	879,536	County
Boston	781,188	City
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	45,816	City
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	35,680	City
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	16,852	Town

1940

Municipality	Population	Type
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	863,248	County
Boston	770,816	City
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	41,259	City
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	34,405	City
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	16,768	Town

1950

Municipality	Population	Type
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	896,615	County
Boston	801,444	City
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	38,912	City
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	36,763	City
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	19,496	Town

1960

Municipality	Population	Type
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	791,329	County
Boston	697,197	City
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	40,080	City
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	33,749	City
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	20,303	Town

1970

Municipality	Population	Type
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	735,190	County
Boston	641,071	City
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	43,159	City
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	30,625	City
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	20,335	Town

1980

Municipality	Population	Type
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	650,142	County
Boston	562,994	City
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	42,423	City
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	25,431	City
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	19,294	Town

1990

Municipality	Population	Type
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	663,906	County
Boston	574,283	City
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	42,786	City
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	28,710	City
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	18,127	Town

2000

Municipality	Population	Type	Change Since 1990	Change Since 1900
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	689,807	County	+25,901	+78,390
Boston	589,141	City	+14,858	+28,249
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	47,283	City	+4,497	+36,888
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	35,080	City	+6,370	+1,008
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	18,303	Town	+176	+12,245

2010

Municipality	Population	Type	Change Since 2000
Suffolk County Suffolk County, Massachusetts Suffolk County has no land border with Plymouth County to its southeast, but the two counties share a water boundary in the middle of Massachusetts Bay.-National protected areas:*Boston African American National Historic Site...	722,023	County	+32,216
Boston	617,594	City	+28,453
Revere Revere, Massachusetts Revere is a city in Suffolk County, Massachusetts, United States, and located approximately from downtown Boston. It is named after the American patriot Paul Revere. As of the 2010 census, the city population was 51,755.- History :...	51,755	City	+4,472
Chelsea Chelsea, Massachusetts Chelsea is a city in Suffolk County, Massachusetts, United States directly across the Mystic River from the city of Boston. It is the smallest city in Massachusetts in land area, and the 26th most densely populated incorporated place in the country.-History:...	35,177	City	+97
Winthrop Winthrop, Massachusetts The Town of Winthrop is a municipality in Suffolk County, Massachusetts, United States. The population of Winthrop was 17,497 at the 2010 U.S. Census. It is an oceanside suburban community in Greater Boston situated at the north entrance to Boston Harbor and is very close to Logan International...	17,497	Town	-806