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The Commemorative
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The Commemorative Quarter for Massachusetts

The 2000 Census showed that Middlesex County had a population of 1,465,396 people. This represented 23.08% of the total population of Massachusetts, making it the state's most populous county (out of 14 counties).

From the Census Estimates for 2009<1>, Middlesex had a population of 1,505,006 people. This is an increase of 2.7% 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.

YearPopulationChange
Since 2000
Year-to-Year Change
20101,503,085+2.57%-0.13% since 2009
20091,505,006+2.7%+1.17% since 2008
20081,487,636+1.52%+0.82% since 2007
20071,475,519+0.69%+0.51% since 2006
20061,467,985+0.18%+0.19% since 2005
20051,465,156  
20041,467,576+0.15%-0.19% since 2003
20031,470,427+0.34%-0.24% since 2002
20021,473,966+0.58%-0.19% since 2001
20011,476,773+0.78%+0.78% since 2000
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20001,465,396The Last Census

Middlesex County had 576,681 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Middlesex County has a total area<3> of 847 square miles [2,195 km²]. Of this total, 823 square miles [2,132 km²] of the area is land, with the balance (2.84%) being water (24.08 square miles [62.4 km²]).

Using the above population and land area values, Middlesex County had a population density of 1,779 people per square mile [687 people/km²], making it the state's 2nd most densely populated county (out of 14 counties).

US Census QuickFacts

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

Click here for the Middlesex County QuickFact (QF-25017).

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

CommunityCensus
QuickFact
Population
(2009 Est)
Population
(2000 Census)
Change in
  Population
CambridgeQF-2511000108,771101,3557.32%
LowellQF-2537000104,390105,167-0.74%
NewtonQF-254556084,59283,8290.91%
SomervilleQF-256253576,49177,478-1.27%
FraminghamQF-252492567,19166,9100.42%
WalthamQF-257260060,60459,2262.33%
MaldenQF-253787556,14656,340-0.34%
MedfordQF-253983555,57855,765-0.34%
ArlingtonQF-250160541,71942,389-1.58%
BillericaQF-250580539,86238,9812.26%
WoburnQF-258103538,98337,2584.63%
MarlboroughQF-253871538,46536,2556.1%
EverettQF-252199038,29938,0370.69%
ChelmsfordQF-251313534,10633,8580.73%
WatertownQF-257344033,11732,9860.4%
NatickQF-254389532,33532,1700.51%
LexingtonQF-253521530,92530,3551.88%
TewksburyQF-256941530,59328,8516.04%
DracutQF-251747529,41128,5622.97%
MelroseQF-254011527,09127,134-0.16%

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

CountyCensus
QuickFact
DirectionPopulation
(2009 Est.)
Population
(2000 Census)
Change in
Population
EssexQF-25009   NE742,582723,4192.65%
NorfolkQF-25021   S666,303650,3082.46%
SuffolkQF-25025   SE753,580689,8079.25%
WorcesterQF-25027   W803,701750,9637.02%
Hillsborough (NH)QF-33011   NW405,906380,8416.58%

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U.S. Census Bureau
Census QuickFact for Middlesex 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 Middlesex. 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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