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The Commemorative Quarter for Pennsylvania

The 2000 Census showed that Dauphin County had a population of 251,798 people. This represented 2.05% of the total population of Pennsylvania, making it the state's 15th most populous county (out of 67 counties).

From the Census Estimates for 2009<1>, Dauphin had a population of 258,934 people. This is an increase of 2.83% 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
2010268,100+6.47%+3.54% since 2009
2009258,934+2.83%+0.28% since 2008
2008258,222+2.55%+0.53% since 2007
2007256,864+2.01%+0.82% since 2006
2006254,776+1.18%+0.62% since 2005
2005253,203+0.56%+0.2% since 2004
2004252,699+0.36%-0.09% since 2003
2003252,932+0.45%+0.13% since 2002
2002252,616+0.32%+0.39% since 2001
2000251,798The Last Census

Dauphin County had 111,133 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Dauphin County has a total area<3> of 557 square miles [1,444 km²]. Of this total, 525 square miles [1,360 km²] of the area is land, with the balance (5.78%) being water (32.24 square miles [83.5 km²]).

Using the above population and land area values, Dauphin County had a population density of 479.4 people per square mile [185.1 people/km²], making it the state's 10th most densely populated county (out of 67 counties).

US Census QuickFacts

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

Click here for the Dauphin County QuickFact (QF-42043).

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

(2009 Est)
(2000 Census)
Change in

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

(2009 Est.)
(2000 Census)
Change in
CumberlandQF-42041   SW232,483213,6748.8%
LancasterQF-42071   SE507,766470,6587.88%
LebanonQF-42075   E130,506120,3278.46%
NorthumberlandQF-42097   N91,31194,556-3.43%
PerryQF-42099   W45,50243,6024.36%
SchuylkillQF-42107   NE146,952150,336-2.25%
YorkQF-42133   S428,937381,75112.36%

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U.S. Census Bureau
Census QuickFact for Dauphin 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 Dauphin. 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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