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The Commemorative
Quarter for
The Commemorative Quarter for Massachusetts

The 2000 Census showed that Suffolk County had a population of 689,807 people. This represented 10.86% of the total population of Massachusetts, making it the state's 4th most populous county (out of 14 counties).

From the Census Estimates for 2009<1>, Suffolk had a population of 753,580 people. This is an increase of 9.25% since the 2000 Census.

The following table shows the recent changes in population. Other than 2000, the population counts have been estimated by the Census Bureau.

Since 2000
Year-to-Year Change
2010722,023+4.67%-4.19% since 2009
2009753,580+9.25%+1.46% since 2008
2008742,724+7.67%+1.91% since 2007
2007728,819+5.66%+1.82% since 2006
2006715,799+3.77%+0.5% since 2005
2005712,228+3.25%+0.27% since 2004
2004710,282+2.97%-0.12% since 2003
2002711,464+3.14%+0.87% since 2001
2001705,348+2.25%+2.25% since 2000
2000689,807The Last Census

Suffolk County had 292,520 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Suffolk County has a total area<3> of 120.2 square miles [311.3 km²]. Of this total, 58.5 square miles [151.6 km²] of the area is land, with the balance (51.3%) being water (61.7 square miles [159.7 km²]).

Using the above population and land area values, Suffolk County had a population density of 11,788 people per square mile [4,551 people/km²], making it the most densely populated county in Massachusetts.

US Census QuickFacts

The Census Bureau has created documents containing demographic information that are called QuickFacts. A QuickFact that is specific to Suffolk County is available. The QuickFact also contains a comparison between Suffolk and the state of Massachusetts.

Click here for the Suffolk County QuickFact (QF-25025).

Below are some of the communities that are located in Suffolk County:

(2009 Est)
(2000 Census)
Change in

Below are the counties that adjoin and form the boundaries of Suffolk County. A link to their specific Census QuickFact has been provided.

(2009 Est.)
(2000 Census)
Change in
EssexQF-25009   N742,582723,4192.65%
MiddlesexQF-25017   NW1,505,0061,465,3962.7%
NorfolkQF-25021   SW666,303650,3082.46%

The Atlantic Ocean lies to the east.

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U.S. Census Bureau
Census QuickFact for Suffolk County

Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2000 Census and the next count will be for the 2010 Census.

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<2>A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).

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<3>The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Suffolk. The value given by the Census Bureau reflects their statistical (or sampling) requirements.

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<4>All Quarter-dollar coin images from the United States Mint.

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