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The Commemorative Quarter for Pennsylvania

The 2000 Census showed that Erie County had a population of 280,843 people. This represented 2.29% of the total population of Pennsylvania, making it the state's 13th most populous county (out of 67 counties).

From the Census Estimates for 2009<1>, Erie had a population of 280,291 people. This is a decrease of 0.2% 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
2010280,566-0.1%+0.1% since 2009
2009280,291-0.2%+0.23% since 2008
2006279,929-0.33%+0.36% since 2005
2005278,933-0.68%-0.31% since 2004
2004279,790-0.37%-0.85% since 2003
2003282,200+0.48%+0.1% since 2002
2002281,920+0.38%+0.14% since 2001
2001281,524+0.24%+0.24% since 2000
2000280,843The Last Census

Erie County had 114,322 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Erie County has a total area<3> of 1,558 square miles [4,036 km²]. Of this total, 801 square miles [2,077 km²] of the area is land, with the balance (48.54%) being water (756 square miles [1,959 km²]).

Using the above population and land area values, Erie County had a population density of 350.2 people per square mile [135.2 people/km²], making it the state's 18th 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 Erie County is available. The QuickFact also contains a comparison between Erie and the state of Pennsylvania.

Click here for the Erie County QuickFact (QF-42049).

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

(2009 Est)
(2000 Census)
Change in

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

(2009 Est.)
(2000 Census)
Change in
Chautauqua (NY)QF-36013   E133,503139,750-4.47%
Ashtabula (OH)QF-39007   SW100,767102,728-1.91%
Crawford (OH)QF-39033   SW43,40346,966-7.59%
Warren (OH)QF-39165   SW210,712158,38333.04%

Lake Erie lies to the north.

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U.S. Census Bureau
Census QuickFact for Erie 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 Erie. 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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