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The 2000 Census showed that McKean County had a population of 45,936 people. This represented 0.37% of the total population of Pennsylvania, making it the state's 47th most populous county (out of 67 counties).

From the Census Estimates for 2009<1>, McKean had a population of 43,196 people. This is a decrease of 5.96% 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
201043,450-5.41%+0.59% since 2009
200943,196-5.96%-0.55% since 2008
200843,436-5.44%-0.44% since 2007
200743,629-5.02%-0.76% since 2006
200643,964-4.29%+0.18% since 2005
200543,886-4.46%-1.04% since 2004
200444,345-3.46%-1.03% since 2003
200344,807-2.46%-1.19% since 2002
200245,346-1.28%+0.28% since 2001
200145,218-1.56%-1.56% since 2000
200045,936The Last Census

McKean County had 21,644 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that McKean County has a total area<3> of 984 square miles [2,548 km²]. Of this total, only a minor amount of that area is covered by water (2.6 square miles [6.74 km²]).

Using the above population and land area values, McKean County had a population density of 46.8 people per square mile [18.07 people/km²], making it the state's 59th 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 McKean County is available. The QuickFact also contains a comparison between McKean and the state of Pennsylvania.

Click here for the McKean County QuickFact (QF-42083).

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

(2009 Est)
(2000 Census)
Change in

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

(2009 Est.)
(2000 Census)
Change in
Allegany (NY)QF-36003   NE49,15749,927-1.54%
Cattaraugus (NY)QF-36009   N79,68983,955-5.08%
CameronQF-42023   SE5,1635,974-13.58%
ElkQF-42047   S32,01135,112-8.83%
ForestQF-42053   SW6,7754,94636.98%
PotterQF-42105   E16,71418,080-7.56%
WarrenQF-42123   W40,63843,863-7.35%

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U.S. Census Bureau
Census QuickFact for McKean 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 McKean. 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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