Last official estimated population of Dewey County was 5,329 (year 2014)[1]. This was 0.002% of total US population and 0.6% of total South Dakota state population. Area of Dewey County is 2,445.3 mi² (=6333.2 km²), in this year population density was 2.18 p/mi². If population growth rate would be same as in period 2010-2014 (+0.13%/yr), Dewey County population in 2024 would be 5,400 [0].
Historical population of Dewey County for period 1880-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position
[1880-1910] +11.31 %/yr
[1910-1920] +15.41 %/yr
[1920-1930] +3.04 %/yr
[1930-1940] -1.25 %/yr
[1940-1950] -1.48 %/yr
[1950-1960] +0.67 %/yr
[1960-1970] -0.17 %/yr
[1970-1980] +0.37 %/yr
[1980-1990] +0.29 %/yr
[1990-2000] +0.78 %/yr
[2000-2005] -1.04 %/yr
[2005-2010] -1.33 %/yr
[2010-2014] +0.13 %/yr
Looking for settlements in Dewey County? Visit this page: Settlements in Dewey County, SD
Population of Dewey County by age groups male (M) and female (F)[1b]
Age Gr. | (M) | (F) | Total |
0 to 4 | 328 | 337 | 665 |
5 to 9 | 272 | 261 | 533 |
10 to 14 | 247 | 268 | 515 |
15 to 19 | 206 | 231 | 437 |
20 to 24 | 196 | 213 | 409 |
25 to 29 | 164 | 177 | 341 |
30 to 34 | 191 | 174 | 365 |
35 to 39 | 142 | 161 | 303 |
40 to 44 | 118 | 163 | 281 |
45 to 49 | 164 | 160 | 324 |
50 to 54 | 198 | 196 | 394 |
55 to 59 | 151 | 155 | 306 |
60 to 64 | 112 | 112 | 224 |
65 to 69 | 88 | 95 | 183 |
70 to 74 | 60 | 70 | 130 |
75 to 79 | 45 | 60 | 105 |
80 to 84 | 29 | 53 | 82 |
85+ | 28 | 37 | 65 |
Dewey County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
Race | Male | Female | Total |
NH | 2633 | 2832 | 5,465 |
IAC | 2054 | 2243 | 4,297 |
NHIAC | 1984 | 2164 | 4,148 |
IA | 1957 | 2163 | 4,120 |
NHIA | 1896 | 2086 | 3,982 |
WAC | 761 | 741 | 1,502 |
NHWAC | 720 | 728 | 1,448 |
WA | 643 | 649 | 1,292 |
NHWA | 615 | 639 | 1,254 |
TOM | 122 | 97 | 219 |
NHTOM | 109 | 94 | 203 |
H | 106 | 91 | 197 |
HIAC | 70 | 79 | 149 |
HIA | 61 | 77 | 138 |
HWAC | 41 | 13 | 54 |
BAC | 28 | 19 | 47 |
NHBAC | 23 | 17 | 40 |
HWA | 28 | 10 | 38 |
AAC | 20 | 18 | 38 |
NHAAC | 17 | 17 | 34 |
BA | 14 | 7 | 21 |
NHBA | 11 | 6 | 17 |
HTOM | 13 | 3 | 16 |
AA | 3 | 7 | 10 |
NHAA | 2 | 7 | 9 |
HBAC | 5 | 2 | 7 |
HBA | 3 | 1 | 4 |
HAAC | 3 | 1 | 4 |
NAC | 2 | 2 | 4 |
NHNAC | 2 | 1 | 3 |
HAA | 1 | 0 | 1 |
HNAC | 0 | 1 | 1 |
NHNA | 0 | 0 | 0 |
NA | 0 | 0 | 0 |
HNA | 0 | 0 | 0 |
• Hughes County population
67.6 mi, 141°
• Walworth County
43.9 mi, 63°
• Sioux County
67.4 mi, 350°
• Corson County
40.7 mi, 335°
• Stanley County
50.8 mi, 175°
• Ziebach County
41.6 mi, 254°
• Potter County
43.2 mi, 98°
• Haakon County
70.4 mi, 211°
• Campbell County
59.8 mi, 42°
• Sully County
45.4 mi, 130°
[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
See note 5 South Dakota Notes
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