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The Commemorative
Quarter for
The Commemorative Quarter for Louisiana

The 2000 Census showed that Washington Parish had a population of 43,926 people. This represented 0.98% of the total population of Louisiana, making it the state's 25th most populous parish (out of 64 parishes).

From the Census Estimates for 2009<1>, Washington had a population of 45,669 people. This is an increase of 3.97% 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
201047,168+7.38%+3.28% since 2009
200945,669+3.97%+0.25% since 2008
200845,554+3.71%+1.1% since 2007
200745,059+2.58%+2.37% since 2006
200644,017+0.21%+0.22% since 2005
200443,748-0.41%+0.13% since 2003
200343,691-0.53%-0.17% since 2002
200143,776-0.34%-0.34% since 2000
200043,926The Last Census

Washington Parish had 19,106 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Washington Parish has a total area<3> of 675 square miles [1,750 km²]. Of this total, only a minor amount of that area is covered by water (6.4 square miles [16.59 km²]).

Using the above population and land area values, Washington Parish had a population density of 65.6 people per square mile [25.33 people/km²], making it the state's 28th most densely populated county (out of 64 parishes).

US Census QuickFacts

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

Click here for the Washington Parish QuickFact (QF-22117).

Below are some of the communities that are located in Washington Parish:

(2009 Est)
(2000 Census)
Change in

Below are the parishes that adjoin and form the boundaries of Washington Parish. A link to their specific Census QuickFact has been provided.

(2009 Est.)
(2000 Census)
Change in
Saint TammanyQF-22103   S231,495191,26821.03%
TangipahoaQF-22105   SW118,688100,58817.99%
Marion (MS)QF-28091   N25,73225,5950.54%
Pearl River (MS)QF-28109   E57,86048,62119%
Pike (MS)QF-28113   NW39,83438,9402.3%
Walthall (MS)QF-28147   N15,29115,1560.89%

Other Roadside Stops ...

About Louisiana

Communities in Louisiana

Off-the-Road Links ...

U.S. Census Bureau
Census QuickFact for Washington Parish

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 Washington. 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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