Last official estimated population of Aurora County was 2,709 (year 2014)[1]. This was 0.001% of total US population and 0.3% of total South Dakota state population. Area of Aurora County is 712.8 mi² (=1846 km²), in this year population density was 3.80 p/mi². If population growth rate would be same as in period 2010-2014 (-0.01%/yr), Aurora County population in 2024 would be 2,707 [0].
Historical population of Aurora 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] +53.6 %/yr
[1890-1900] -2.27 %/yr
[1900-1910] +4.35 %/yr
[1910-1920] +1.67 %/yr
[1920-1930] -0.15 %/yr
[1930-1940] -2.78 %/yr
[1940-1950] -0.7 %/yr
[1950-1960] -0.55 %/yr
[1960-1970] -1.26 %/yr
[1970-1980] -1.41 %/yr
[1980-1990] -1.45 %/yr
[1990-2000] -0.27 %/yr
[2000-2005] -1.78 %/yr
[2005-2010] -0.57 %/yr
[2010-2014] -0.01 %/yr
Looking for settlements in Aurora County? Visit this page: Settlements in Aurora County, SD
Population of Aurora County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 95 | 83 | 178 |
| 5 to 9 | 112 | 95 | 207 |
| 10 to 14 | 111 | 82 | 193 |
| 15 to 19 | 113 | 93 | 206 |
| 20 to 24 | 56 | 68 | 124 |
| 25 to 29 | 84 | 56 | 140 |
| 30 to 34 | 77 | 78 | 155 |
| 35 to 39 | 67 | 68 | 135 |
| 40 to 44 | 73 | 68 | 141 |
| 45 to 49 | 84 | 69 | 153 |
| 50 to 54 | 103 | 89 | 192 |
| 55 to 59 | 99 | 104 | 203 |
| 60 to 64 | 94 | 83 | 177 |
| 65 to 69 | 76 | 77 | 153 |
| 70 to 74 | 52 | 51 | 103 |
| 75 to 79 | 55 | 63 | 118 |
| 80 to 84 | 37 | 51 | 88 |
| 85+ | 27 | 52 | 79 |
Aurora 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 |
| WAC | 1363 | 1298 | 2,661 |
| WA | 1346 | 1289 | 2,635 |
| NH | 1337 | 1287 | 2,624 |
| NHWAC | 1289 | 1257 | 2,546 |
| NHWA | 1272 | 1249 | 2,521 |
| H | 78 | 43 | 121 |
| HWAC | 74 | 41 | 115 |
| HWA | 74 | 40 | 114 |
| IAC | 38 | 28 | 66 |
| NHIAC | 35 | 26 | 61 |
| IA | 29 | 25 | 54 |
| NHIA | 26 | 24 | 50 |
| TOM | 17 | 9 | 26 |
| NHTOM | 17 | 8 | 25 |
| BAC | 17 | 7 | 24 |
| NHBAC | 16 | 6 | 22 |
| NHAAC | 15 | 5 | 20 |
| AAC | 15 | 5 | 20 |
| NHAA | 14 | 3 | 17 |
| AA | 14 | 3 | 17 |
| BA | 9 | 4 | 13 |
| NHBA | 8 | 3 | 11 |
| HIAC | 3 | 2 | 5 |
| HIA | 3 | 1 | 4 |
| HBA | 1 | 1 | 2 |
| HBAC | 1 | 1 | 2 |
| NAC | 0 | 1 | 1 |
| NHNAC | 0 | 1 | 1 |
| HTOM | 0 | 1 | 1 |
| HNAC | 0 | 0 | 0 |
| HAAC | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Davison County population
21.3 mi, 
98°
• Charles Mix County
35.8 mi, 
181°
• Hutchinson County
49.4 mi, 
122°
• Brule County
25.7 mi, 
270°
• Gregory County
49 mi, 
219°
• Hanson County
39.1 mi, 
94°
• Douglas County
25.5 mi, 
154°
• Sanborn County
31.7 mi, 
49°
• Jerauld County
23.5 mi, 
354°
• Buffalo County
38.2 mi, 
305°
[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, Charles Mix South Dakota Notes
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