Last official estimated population of Todd County was 9,637 (year 2014)[1]. This was 0.003% of total US population and 1.1% of total South Dakota state population. Area of Todd County is 1,390.7 mi² (=3602 km²), in this year population density was 6.93 p/mi². If population growth rate would be same as in period 2010-2014 (+0.06%/yr), Todd County population in 2025 would be 9,706 [0].
Historical population of Todd County for period 1910-2014 [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
[1910-1920] +2.55 %/yr
[1920-1930] +7.8 %/yr
[1930-1940] -0.32 %/yr
[1940-1950] -1.81 %/yr
[1950-1960] -0.21 %/yr
[1960-1970] +3.55 %/yr
[1970-1980] +1.04 %/yr
[1980-1990] +1.32 %/yr
[1990-2000] +0.81 %/yr
[2000-2005] +0.94 %/yr
[2005-2010] +0.27 %/yr
[2010-2014] +0.06 %/yr
Looking for settlements in Todd County? Visit this page: Settlements in Todd County, SD
Population of Todd County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 650 | 635 | 1,285 |
| 5 to 9 | 581 | 573 | 1,154 |
| 10 to 14 | 500 | 516 | 1,016 |
| 15 to 19 | 429 | 399 | 828 |
| 20 to 24 | 367 | 367 | 734 |
| 25 to 29 | 343 | 372 | 715 |
| 30 to 34 | 321 | 363 | 684 |
| 35 to 39 | 231 | 281 | 512 |
| 40 to 44 | 225 | 260 | 485 |
| 45 to 49 | 205 | 246 | 451 |
| 50 to 54 | 233 | 244 | 477 |
| 55 to 59 | 218 | 238 | 456 |
| 60 to 64 | 151 | 217 | 368 |
| 65 to 69 | 143 | 146 | 289 |
| 70 to 74 | 93 | 70 | 163 |
| 75 to 79 | 46 | 56 | 102 |
| 80 to 84 | 37 | 48 | 85 |
| 85+ | 34 | 44 | 78 |
Todd 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 | 4617 | 4902 | 9,519 |
| IAC | 4212 | 4502 | 8,714 |
| IA | 4114 | 4409 | 8,523 |
| NHIAC | 4046 | 4356 | 8,402 |
| NHIA | 3961 | 4275 | 8,236 |
| WAC | 654 | 645 | 1,299 |
| NHWAC | 617 | 607 | 1,224 |
| WA | 544 | 528 | 1,072 |
| NHWA | 523 | 507 | 1,030 |
| H | 190 | 173 | 363 |
| HIAC | 166 | 146 | 312 |
| HIA | 153 | 134 | 287 |
| TOM | 114 | 120 | 234 |
| NHTOM | 98 | 102 | 200 |
| HWAC | 37 | 38 | 75 |
| BAC | 39 | 21 | 60 |
| NHBAC | 35 | 18 | 53 |
| AAC | 19 | 25 | 44 |
| HWA | 21 | 21 | 42 |
| NHAAC | 18 | 23 | 41 |
| HTOM | 16 | 18 | 34 |
| BA | 22 | 6 | 28 |
| NHBA | 22 | 6 | 28 |
| AA | 13 | 12 | 25 |
| NHAA | 13 | 12 | 25 |
| HBAC | 4 | 3 | 7 |
| NAC | 1 | 3 | 4 |
| HAAC | 1 | 2 | 3 |
| NHNAC | 1 | 1 | 2 |
| HNAC | 0 | 2 | 2 |
| HBA | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Cherry County population
47.3 mi, 
201°
• Tripp County
42.9 mi, 
76°
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75.9 mi, 
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• Lyman County
64.2 mi, 
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• Bennett County
48.9 mi, 
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• Brown County
70.9 mi, 
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• Jackson County
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• Mellette County
26.1 mi, 
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• Jones County
51.4 mi, 
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• Keya Paha County
55 mi, 
114°
[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
*Rosebud Reservation South Dakota Notes
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