Last official estimated population of McCook County was 5,608 (year 2014)[1]. This was 0.002% of total US population and 0.7% of total South Dakota state population. Area of McCook County is 576.9 mi² (=1494.1 km²), in this year population density was 9.72 p/mi². If population growth rate would be same as in period 2010-2014 (-0.04%/yr), McCook County population in 2025 would be 5,581 [0].
Historical population of McCook 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] +17.52 %/yr
[1890-1900] +3.03 %/yr
[1900-1910] +0.99 %/yr
[1910-1920] +0.41 %/yr
[1920-1930] +0.32 %/yr
[1930-1940] -0.52 %/yr
[1940-1950] -1.03 %/yr
[1950-1960] -0.65 %/yr
[1960-1970] -1.31 %/yr
[1970-1980] -1.17 %/yr
[1980-1990] -1.24 %/yr
[1990-2000] +0.24 %/yr
[2000-2005] -0.11 %/yr
[2005-2010] -0.61 %/yr
[2010-2014] -0.04 %/yr
Looking for settlements in McCook County? Visit this page: Settlements in McCook County, SD
Population of McCook County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 214 | 180 | 394 |
| 5 to 9 | 223 | 213 | 436 |
| 10 to 14 | 196 | 224 | 420 |
| 15 to 19 | 170 | 167 | 337 |
| 20 to 24 | 161 | 127 | 288 |
| 25 to 29 | 144 | 114 | 258 |
| 30 to 34 | 154 | 148 | 302 |
| 35 to 39 | 168 | 150 | 318 |
| 40 to 44 | 150 | 138 | 288 |
| 45 to 49 | 188 | 144 | 332 |
| 50 to 54 | 209 | 198 | 407 |
| 55 to 59 | 218 | 192 | 410 |
| 60 to 64 | 168 | 187 | 355 |
| 65 to 69 | 137 | 140 | 277 |
| 70 to 74 | 118 | 148 | 266 |
| 75 to 79 | 83 | 108 | 191 |
| 80 to 84 | 70 | 103 | 173 |
| 85+ | 68 | 129 | 197 |
McCook 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 | 2802 | 2772 | 5,574 |
| WA | 2775 | 2757 | 5,532 |
| NH | 2729 | 2750 | 5,479 |
| NHWAC | 2696 | 2716 | 5,412 |
| NHWA | 2676 | 2704 | 5,380 |
| H | 110 | 60 | 170 |
| HWAC | 106 | 56 | 162 |
| HWA | 99 | 53 | 152 |
| IAC | 29 | 31 | 60 |
| NHIAC | 24 | 27 | 51 |
| TOM | 28 | 15 | 43 |
| BAC | 28 | 13 | 41 |
| IA | 14 | 23 | 37 |
| NHBAC | 23 | 10 | 33 |
| NHTOM | 21 | 12 | 33 |
| NHIA | 13 | 20 | 33 |
| BA | 17 | 8 | 25 |
| NHBA | 15 | 7 | 22 |
| NHAAC | 6 | 9 | 15 |
| AAC | 6 | 9 | 15 |
| HTOM | 7 | 3 | 10 |
| AA | 3 | 7 | 10 |
| NHAA | 3 | 7 | 10 |
| HIAC | 5 | 4 | 9 |
| HBAC | 5 | 3 | 8 |
| HIA | 1 | 3 | 4 |
| NAC | 3 | 0 | 3 |
| HBA | 2 | 1 | 3 |
| NA | 2 | 0 | 2 |
| NHNAC | 2 | 0 | 2 |
| HNAC | 1 | 0 | 1 |
| NHNA | 1 | 0 | 1 |
| HNA | 1 | 0 | 1 |
| HAAC | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Minnehaha County population
28.3 mi, 
91°
• Lincoln County
42.3 mi, 
130°
• Davison County
39.7 mi, 
270°
• Lake County
26.9 mi, 
26°
• Turner County
27.7 mi, 
157°
• Hutchinson County
30.6 mi, 
219°
• Moody County
41.2 mi, 
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• Hanson County
21.7 mi, 270°
• Miner County
26.7 mi, 
332°
• Sanborn County
43.4 mi, 
303°
[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
*Jayne, Minnehaha South Dakota Notes
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