Last official estimated population of Ziebach County was 2,820 (year 2014)[1]. This was 0.001% of total US population and 0.3% of total South Dakota state population. Area of Ziebach County is 1,970.7 mi² (=5104.2 km²), in this year population density was 1.43 p/mi². If population growth rate would be same as in period 2010-2014 (+0.17%/yr), Ziebach County population in 2025 would be 2,873 [0].
Historical population of Ziebach County for period 1920-2014 [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
[1920-1930] +0.83 %/yr
[1930-1940] -3.34 %/yr
[1940-1950] -0.98 %/yr
[1950-1960] -0.43 %/yr
[1960-1970] -1.16 %/yr
[1970-1980] +0.38 %/yr
[1980-1990] -0.39 %/yr
[1990-2000] +1.27 %/yr
[2000-2005] +1.12 %/yr
[2005-2010] +1.02 %/yr
[2010-2014] +0.17 %/yr
Looking for settlements in Ziebach County? Visit this page: Settlements in Ziebach County, SD
Population of Ziebach County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 82 | 95 | 177 |
| 5 to 9 | 153 | 172 | 325 |
| 10 to 14 | 171 | 166 | 337 |
| 15 to 19 | 146 | 139 | 285 |
| 20 to 24 | 125 | 96 | 221 |
| 25 to 29 | 86 | 68 | 154 |
| 30 to 34 | 121 | 68 | 189 |
| 35 to 39 | 63 | 95 | 158 |
| 40 to 44 | 90 | 84 | 174 |
| 45 to 49 | 67 | 80 | 147 |
| 50 to 54 | 110 | 110 | 220 |
| 55 to 59 | 74 | 77 | 151 |
| 60 to 64 | 56 | 43 | 99 |
| 65 to 69 | 30 | 30 | 60 |
| 70 to 74 | 25 | 22 | 47 |
| 75 to 79 | 11 | 21 | 32 |
| 80 to 84 | 21 | 13 | 34 |
| 85+ | 9 | 7 | 16 |
Ziebach 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 | 1388 | 1334 | 2,722 |
| IAC | 1048 | 1042 | 2,090 |
| IA | 1011 | 1000 | 2,011 |
| NHIAC | 1004 | 997 | 2,001 |
| NHIA | 967 | 956 | 1,923 |
| WAC | 415 | 377 | 792 |
| NHWAC | 407 | 370 | 777 |
| WA | 370 | 320 | 690 |
| NHWA | 362 | 315 | 677 |
| TOM | 47 | 58 | 105 |
| H | 52 | 52 | 104 |
| NHTOM | 47 | 56 | 103 |
| HIAC | 44 | 45 | 89 |
| HIA | 44 | 44 | 88 |
| BAC | 15 | 10 | 25 |
| NHBAC | 15 | 8 | 23 |
| NHAAC | 8 | 15 | 23 |
| AAC | 8 | 15 | 23 |
| HWAC | 8 | 7 | 15 |
| HWA | 8 | 5 | 13 |
| AA | 4 | 6 | 10 |
| NHAA | 4 | 6 | 10 |
| BA | 7 | 2 | 9 |
| NHBA | 7 | 1 | 8 |
| NAC | 1 | 3 | 4 |
| NHNAC | 1 | 3 | 4 |
| HTOM | 0 | 2 | 2 |
| HBAC | 0 | 2 | 2 |
| NA | 1 | 0 | 1 |
| NHNA | 1 | 0 | 1 |
| HBA | 0 | 1 | 1 |
| HNAC | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
| HAAC | 0 | 0 | 0 |
• Meade County population
58.1 mi, 
242°
• Walworth County
85 mi, 
69°
• Dewey County
41.6 mi, 74°
• Sioux County
82.7 mi, 
20°
• Corson County
53.5 mi, 
25°
• Stanley County
59.8 mi, 
131°
• Perkins County
52 mi, 
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• Potter County
83.1 mi, 
86°
• Haakon County
48.9 mi, 
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• Sully County
77.2 mi, 
103°
[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
*Armstrong, Schnasse, Sterling South Dakota Notes
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