Last official estimated population of Douglas County was 2,993 (year 2014)[1]. This was 0.001% of total US population and 0.3% of total South Dakota state population. Area of Douglas County is 433.7 mi² (=1123.2 km²), in this year population density was 6.90 p/mi². If population growth rate would be same as in period 2010-2014 (-0.08%/yr), Douglas County population in 2024 would be 2,971 [0].
Historical population of Douglas 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] +94.29 %/yr
[1890-1900] +0.86 %/yr
[1900-1910] +2.47 %/yr
[1910-1920] +0.89 %/yr
[1920-1930] +0.34 %/yr
[1930-1940] -1.3 %/yr
[1940-1950] -1.18 %/yr
[1950-1960] -0.97 %/yr
[1960-1970] -1.12 %/yr
[1970-1980] -0.88 %/yr
[1980-1990] -1.09 %/yr
[1990-2000] -0.8 %/yr
[2000-2005] -1.27 %/yr
[2005-2010] -1.53 %/yr
[2010-2014] -0.08 %/yr
Looking for settlements in Douglas County? Visit this page: Settlements in Douglas County, SD
Population of Douglas County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 89 | 97 | 186 |
| 5 to 9 | 81 | 95 | 176 |
| 10 to 14 | 92 | 109 | 201 |
| 15 to 19 | 95 | 88 | 183 |
| 20 to 24 | 81 | 63 | 144 |
| 25 to 29 | 75 | 59 | 134 |
| 30 to 34 | 73 | 56 | 129 |
| 35 to 39 | 65 | 56 | 121 |
| 40 to 44 | 59 | 73 | 132 |
| 45 to 49 | 81 | 76 | 157 |
| 50 to 54 | 111 | 113 | 224 |
| 55 to 59 | 139 | 119 | 258 |
| 60 to 64 | 104 | 88 | 192 |
| 65 to 69 | 89 | 94 | 183 |
| 70 to 74 | 73 | 67 | 140 |
| 75 to 79 | 68 | 59 | 127 |
| 80 to 84 | 37 | 63 | 100 |
| 85+ | 64 | 122 | 186 |
Douglas 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 | 1459 | 1475 | 2,934 |
| WAC | 1434 | 1438 | 2,872 |
| WA | 1425 | 1431 | 2,856 |
| NHWAC | 1417 | 1423 | 2,840 |
| NHWA | 1409 | 1418 | 2,827 |
| IAC | 36 | 48 | 84 |
| NHIAC | 36 | 44 | 80 |
| IA | 28 | 44 | 72 |
| NHIA | 28 | 40 | 68 |
| H | 17 | 22 | 39 |
| HWAC | 17 | 15 | 32 |
| HWA | 16 | 13 | 29 |
| BAC | 17 | 10 | 27 |
| NHBAC | 16 | 8 | 24 |
| TOM | 11 | 10 | 21 |
| NHTOM | 10 | 8 | 18 |
| BA | 11 | 6 | 17 |
| NHBA | 11 | 6 | 17 |
| AAC | 1 | 10 | 11 |
| NHAAC | 1 | 7 | 8 |
| AA | 1 | 6 | 7 |
| NHAA | 1 | 3 | 4 |
| HIAC | 0 | 4 | 4 |
| HIA | 0 | 4 | 4 |
| HBAC | 1 | 2 | 3 |
| HTOM | 1 | 2 | 3 |
| HAAC | 0 | 3 | 3 |
| HAA | 0 | 3 | 3 |
| NHNAC | 0 | 1 | 1 |
| NAC | 0 | 1 | 1 |
| HNAC | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| HBA | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Davison County population
22.4 mi, 
26°
• Charles Mix County
17.5 mi, 
222°
• Hutchinson County
30.8 mi, 
97°
• Bon Homme County
36.8 mi, 
139°
• Brule County
43.6 mi, 
302°
• Gregory County
44.9 mi, 
250°
• Hanson County
34.5 mi, 
54°
• Aurora County
25.5 mi, 
334°
• Sanborn County
45.5 mi, 
17°
• Boyd County
40.2 mi, 
211°
[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
*Charles Mix South Dakota Notes
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