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Suffolk County, Massachusetts facts for kids

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Suffolk County
Suffolk County Courthouse
Suffolk County Courthouse
Official seal of Suffolk County
Seal
Map of Massachusetts highlighting Suffolk County
Location within the U.S. state of Massachusetts
Map of the United States highlighting Massachusetts
Massachusetts's location within the U.S.
Country  United States
State  Massachusetts
Founded May 10, 1643
Named for Suffolk
Seat Boston
Largest city Boston
Area
 • Total 120 sq mi (300 km2)
 • Land 58.15 sq mi (150.6 km2)
 • Water 62 sq mi (160 km2)  52%%
Population
 (2020)
 • Total 797,936 Increase
 • Density 13,698/sq mi (5,289/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional districts 5th, 7th, 8th

Suffolk County is located in the state of Massachusetts, in the United States. It's home to the important city of Boston, which is the state capital. In 2020, about 797,936 people lived here. This makes it the fourth-most populated county in Massachusetts.

Suffolk County includes the cities of Boston, Chelsea, and Revere. It also includes the town of Winthrop. Even though the county government stopped in 1999, Suffolk County is still an important area. It helps organize state government services and is used for counting people and other statistics. It's also a key part of the larger Boston area.

History of Suffolk County

Boston's Second City Hall 1841-1865
Old Suffolk County Courthouse 1810-1841

Suffolk County was created a long time ago, on May 10, 1643. This happened when the leaders of the Massachusetts Bay Colony decided to divide the area into four main parts, called "shires."

When it was first formed, Suffolk County included Boston and several other towns. These towns were Roxbury, Dorchester, Dedham, Braintree, Weymouth, and Hingham. The county was named after Suffolk, a place in England. The name "Suffolk" means "southern folk."

Over the years, the borders of Suffolk County changed. In 1731, some western parts of the county, like Mendon and Uxbridge, became part of Worcester County. Later, in 1793, most of the original Suffolk County split off. These areas became Norfolk County. Only Boston, Chelsea, Hingham, and Hull stayed in Suffolk County.

In 1803, Hingham and Hull also left Suffolk County. They joined Plymouth County instead. Revere became its own town in 1846, separating from Chelsea. Winthrop became a town in 1852, separating from Revere.

In the late 1800s and early 1900s, Boston grew bigger. It added several nearby cities and towns. These included Hyde Park, Roxbury, West Roxbury, and Dorchester from Norfolk County. It also added Charlestown and Brighton from Middlesex County. This made Suffolk County larger again.

In the early 1900s, the City of Boston started taking over many of the county's jobs. The Boston City Council began acting like the county's main group. The City Treasurer also took on the role of County Treasurer. The county government was officially ended in 1999.

Geography of Suffolk County

Suffolk County covers a total area of about 120 square miles (310 square kilometers). About 58 square miles (150 square kilometers) of this is land. The rest, about 62 square miles (160 square kilometers), is water. This means more than half of the county's total area is water! It is the second-smallest county in Massachusetts by land area. It is the smallest by total area.

Neighboring Counties

Suffolk County shares borders with these other counties:

Even though it doesn't touch land, Suffolk County also shares a water border with Plymouth County. This border is in the middle of Massachusetts Bay.

Special Protected Areas

Some important protected areas are found in Suffolk County:

Main Roads and Highways

Many major roads and highways pass through Suffolk County. These include:

  • I‑90 / Mass Pike (Massachusetts Turnpike)
  • I‑93
  • US 1
  • US 20
  • Route 1A
  • Route 9
  • Route 16
  • Route 28
  • Route 30
  • Route 60
  • Route 99
  • Route 107
  • Route 145
  • Route 203

People of Suffolk County

Historical population
Census Pop.
1790 44,865
1800 28,015 −37.6%
1810 34,381 22.7%
1820 43,940 27.8%
1830 62,163 41.5%
1840 95,773 54.1%
1850 144,517 50.9%
1860 192,700 33.3%
1870 270,802 40.5%
1880 387,927 43.3%
1890 484,780 25.0%
1900 611,417 26.1%
1910 731,388 19.6%
1920 835,522 14.2%
1930 879,536 5.3%
1940 863,248 −1.9%
1950 896,615 3.9%
1960 791,329 −11.7%
1970 735,190 −7.1%
1980 650,142 −11.6%
1990 663,906 2.1%
2000 689,807 3.9%
2010 722,023 4.7%
2020 797,936 10.5%
2023 (est.) 768,425 6.4%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2020

In 2020, Suffolk County had 797,936 people. The average age of people living here was about 31.5 years old.

Different Backgrounds

Suffolk County is a diverse place with people from many different backgrounds. Here's a look at the main groups in 2017:

Suffolk County Racial Breakdown of Population (2017)
Race Percentage of
Suffolk County
population
Percentage of
Massachusetts
population
Percentage of
United States
population
County-to-State
Difference
County-to-USA
Difference
White 61.7% 81.3% 76.6% –19.6% –14.9%
White (Non-Hispanic) 45.4% 72.1% 60.7% –26.7% –15.3%
Black 24.9% 8.8% 13.4% +16.1% +11.5%
Hispanic 22.9% 11.9% 18.1% +11.0% +4.8%
Asian 9.1% 6.9% 5.8% +2.2% +3.3%
Native Americans/Hawaiians 0.9% 0.6% 1.5% +0.3% –0.6%
Two or more races 3.4% 2.4% 2.7% +1.0% +0.7%

Family Backgrounds (Ancestry)

Many people in Suffolk County have roots from different parts of the world. Based on a survey from 2012-2016, some of the largest ancestry groups are:

Cities and Towns in Suffolk County

Suffolk County
Map of Suffolk County showing (clockwise from bottom) Boston (red), Chelsea (yellow), Revere (green), and Winthrop (blue). Interior water features such as Boston Harbor are filled in by the color of the containing city.

Suffolk County is made up of four main communities:

Education in Suffolk County

Each city and town in Suffolk County has its own public school system. These include:

  • Boston Public Schools
  • Chelsea Public Schools
  • Revere Public Schools
  • Winthrop Public Schools

There are also many colleges and universities in Suffolk County. Some of these are:

The county also has several public library systems:

Images for kids

See also

Kids robot.svg In Spanish: Condado de Suffolk (Massachusetts) para niños

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