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The Commemorative
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The Commemorative Quarter for South Dakota

The 2000 Census showed that Sully County had a population of 1,556 people. This represented 0.21% of the total population of South Dakota, making it the state's 64th most populous county (out of 66 counties).

From the Census Estimates for 2009<1>, Sully had a population of 1,348 people. This is a decrease of 13.37% 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
20101,373-11.76%+1.85% since 2009
20091,348-13.37%-1.03% since 2008
20081,362-12.47%-3.61% since 2007
20071,413-9.19%+0.71% since 2006
20061,403-9.83%+0.86% since 2005
20051,391-10.6%-0.5% since 2004
20041,398-10.15%-2.03% since 2003
20031,427-8.29%-3.71% since 2002
20021,482-4.76%-3.26% since 2001
20011,532-1.54%-1.54% since 2000
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20001,556The Last Census

Sully County had 844 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Sully County has a total area<3> of 1,070 square miles [2,772 km²]. Of this total, 1,006 square miles [2,607 km²] of the area is land, with the balance (5.93%) being water (63.5 square miles [164.4 km²]).

Using the above population and land area values, Sully County had a population density of 1.55 people per square mile [0.6 people/km²], making it the state's 57th 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 Sully County is available. The QuickFact also contains a comparison between Sully and the state of South Dakota.

Click here for the Sully County QuickFact (QF-46119).

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

CountyCensus
QuickFact
DirectionPopulation
(2009 Est.)
Population
(2000 Census)
Change in
Population
DeweyQF-46041   NW5,9695,972---
HughesQF-46065   S16,96916,4812.96%
HydeQF-46069   E1,3931,671-16.64%
PotterQF-46107   N2,0532,693-23.77%
StanleyQF-46117   SW2,7922,7720.72%

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U.S. Census Bureau
Census QuickFact for Sully 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 Sully. 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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