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The 2000 Census showed that Lyman County had a population of 3,895 people. This represented 0.52% of the total population of South Dakota, making it the state's 43rd most populous county (out of 66 counties).

From the Census Estimates for 2009<1>, Lyman had a population of 3,891 people. This is a decrease of 0.1% 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
20103,755-3.59%-3.5% since 2009
20093,891-0.1%+2.15% since 2008
20083,809-2.21%-1.86% since 2007
20073,881-0.36%+0.7% since 2006
20063,854-1.05%+0.39% since 2005
20053,839-1.44%-1.46% since 2004
20043,896  
20033,911+0.41%+0.31% since 2002
20023,899+0.1% 
20013,898  
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20003,895The Last Census

Lyman County had 1,636 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Lyman County has a total area<3> of 1,707 square miles [4,421 km²]. Of this total, 1,639 square miles [4,247 km²] of the area is land, with the balance (3.93%) being water (67.1 square miles [173.8 km²]).

Using the above population and land area values, Lyman County had a population density of 2.38 people per square mile [0.92 people/km²], making it the state's 51st most densely populated county (out of 66 counties).

US Census QuickFacts

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

Click here for the Lyman County QuickFact (QF-46085).

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

CommunityCensus
QuickFact
Population
(2009 Est)
Population
(2000 Census)
Change in
  Population

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

CountyCensus
QuickFact
DirectionPopulation
(2009 Est.)
Population
(2000 Census)
Change in
Population
BruleQF-46015   E5,2755,364-1.66%
BuffaloQF-46017   NE2,0672,0321.72%
GregoryQF-46053   SE4,0034,792-16.46%
HughesQF-46065   NW16,96916,4812.96%
HydeQF-46069   N1,3931,671-16.64%
JonesQF-46075   W1,0371,193-13.08%
MelletteQF-46095   SW2,0422,083-1.97%
StanleyQF-46117   NW2,7922,7720.72%
TrippQF-46123   S5,5416,430-13.83%

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U.S. Census Bureau
Census QuickFact for Lyman 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 Lyman. 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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