Last official estimated population of Spink County was 6,410 (year 2014)[1]. This was 0.002% of total US population and 0.7% of total South Dakota state population. Area of Spink County is 1,509.7 mi² (=3910.2 km²), in this year population density was 4.25 p/mi². If population growth rate would be same as in period 2010-2014 (-0.02%/yr), Spink County population in 2026 would be 6,395 [0].
Historical population of Spink 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
[1880-1890] +36.33 %/yr
[1890-1900] -1.09 %/yr
[1900-1910] +5.35 %/yr
[1910-1920] -0.13 %/yr
[1920-1930] -0.3 %/yr
[1930-1940] -1.98 %/yr
[1940-1950] -0.26 %/yr
[1950-1960] -0.42 %/yr
[1960-1970] -0.99 %/yr
[1970-1980] -1.4 %/yr
[1980-1990] -1.41 %/yr
[1990-2000] -0.68 %/yr
[2000-2005] -1.77 %/yr
[2005-2010] -1.2 %/yr
[2010-2014] -0.02 %/yr
Looking for settlements in Spink County? Visit this page: Settlements in Spink County, SD
Population of Spink County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 213 | 177 | 390 |
| 5 to 9 | 224 | 222 | 446 |
| 10 to 14 | 237 | 213 | 450 |
| 15 to 19 | 247 | 206 | 453 |
| 20 to 24 | 197 | 168 | 365 |
| 25 to 29 | 193 | 140 | 333 |
| 30 to 34 | 192 | 190 | 382 |
| 35 to 39 | 143 | 148 | 291 |
| 40 to 44 | 160 | 160 | 320 |
| 45 to 49 | 173 | 190 | 363 |
| 50 to 54 | 253 | 251 | 504 |
| 55 to 59 | 278 | 269 | 547 |
| 60 to 64 | 241 | 222 | 463 |
| 65 to 69 | 182 | 160 | 342 |
| 70 to 74 | 126 | 131 | 257 |
| 75 to 79 | 107 | 140 | 247 |
| 80 to 84 | 87 | 111 | 198 |
| 85+ | 79 | 168 | 247 |
Spink 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 | 3237 | 3213 | 6,450 |
| WAC | 3226 | 3188 | 6,414 |
| WA | 3194 | 3155 | 6,349 |
| NHWAC | 3166 | 3137 | 6,303 |
| NHWA | 3134 | 3104 | 6,238 |
| IAC | 105 | 71 | 176 |
| H | 95 | 53 | 148 |
| NHIAC | 75 | 69 | 144 |
| IA | 79 | 48 | 127 |
| HWAC | 60 | 51 | 111 |
| HWA | 60 | 51 | 111 |
| NHIA | 49 | 46 | 95 |
| TOM | 34 | 34 | 68 |
| NHTOM | 34 | 34 | 68 |
| BAC | 33 | 30 | 63 |
| NHBAC | 28 | 30 | 58 |
| BA | 25 | 22 | 47 |
| NHBA | 20 | 22 | 42 |
| HIA | 30 | 2 | 32 |
| HIAC | 30 | 2 | 32 |
| NHAAC | 4 | 11 | 15 |
| AAC | 4 | 11 | 15 |
| NHAA | 0 | 7 | 7 |
| AA | 0 | 7 | 7 |
| HBAC | 5 | 0 | 5 |
| HBA | 5 | 0 | 5 |
| HNAC | 0 | 0 | 0 |
| HAAC | 0 | 0 | 0 |
| NHNAC | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| NAC | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
| HTOM | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Brown County population
46 mi, 
359°
• Codington County
55.9 mi, 
86°
• Beadle County
35.1 mi, 
175°
• Hamlin County
59.3 mi, 
106°
• Day County
47.5 mi, 
51°
• Kingsbury County
56.6 mi, 
133°
• Edmunds County
54 mi, 
308°
• Clark County
30.5 mi, 
98°
• Hand County
41.8 mi, 
231°
• Faulk County
41 mi, 
283°
[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
*Buffalo South Dakota Notes
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