Last official estimated population of Rosebud County was 9,266 (year 2014)[1]. This was 0.003% of total US population and 0.9% of total Montana state population. Area of Rosebud County is 5,025.4 mi² (=13015.8 km²), in this year population density was 1.84 p/mi². If population growth rate would be same as in period 2010-2014 (+0.09%/yr), Rosebud County population in 2025 would be 9,357 [0].
Historical population of Rosebud 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] +0.02 %/yr
[1920-1930] -0.85 %/yr
[1930-1940] -1.25 %/yr
[1940-1950] +0.14 %/yr
[1950-1960] -0.6 %/yr
[1960-1970] -0.25 %/yr
[1970-1980] +5.08 %/yr
[1980-1990] +0.6 %/yr
[1990-2000] -1.12 %/yr
[2000-2005] -0.56 %/yr
[2005-2010] +0.22 %/yr
[2010-2014] +0.09 %/yr
Looking for settlements in Rosebud County? Visit this page: Settlements in Rosebud County, MT
Population of Rosebud County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 397 | 410 | 807 |
| 5 to 9 | 397 | 349 | 746 |
| 10 to 14 | 359 | 373 | 732 |
| 15 to 19 | 375 | 310 | 685 |
| 20 to 24 | 255 | 274 | 529 |
| 25 to 29 | 255 | 251 | 506 |
| 30 to 34 | 270 | 259 | 529 |
| 35 to 39 | 240 | 237 | 477 |
| 40 to 44 | 259 | 264 | 523 |
| 45 to 49 | 262 | 238 | 500 |
| 50 to 54 | 320 | 337 | 657 |
| 55 to 59 | 359 | 370 | 729 |
| 60 to 64 | 315 | 319 | 634 |
| 65 to 69 | 265 | 224 | 489 |
| 70 to 74 | 158 | 158 | 316 |
| 75 to 79 | 93 | 108 | 201 |
| 80 to 84 | 69 | 70 | 139 |
| 85+ | 50 | 77 | 127 |
Rosebud 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 | 4476 | 4469 | 8,945 |
| WAC | 2960 | 2890 | 5,850 |
| NHWAC | 2863 | 2795 | 5,658 |
| WA | 2824 | 2745 | 5,569 |
| NHWA | 2744 | 2666 | 5,410 |
| IAC | 1800 | 1803 | 3,603 |
| NHIAC | 1665 | 1732 | 3,397 |
| IA | 1702 | 1688 | 3,390 |
| NHIA | 1579 | 1630 | 3,209 |
| H | 222 | 159 | 381 |
| TOM | 137 | 154 | 291 |
| NHTOM | 120 | 134 | 254 |
| HIAC | 135 | 71 | 206 |
| HWAC | 97 | 95 | 192 |
| HIA | 123 | 58 | 181 |
| HWA | 80 | 79 | 159 |
| AAC | 36 | 57 | 93 |
| NHAAC | 32 | 50 | 82 |
| BAC | 40 | 33 | 73 |
| NHBAC | 35 | 26 | 61 |
| NHAA | 18 | 30 | 48 |
| AA | 18 | 30 | 48 |
| HTOM | 17 | 20 | 37 |
| BA | 16 | 10 | 26 |
| NHBA | 14 | 8 | 22 |
| HBAC | 5 | 7 | 12 |
| NHNAC | 8 | 3 | 11 |
| NAC | 8 | 3 | 11 |
| HAAC | 4 | 7 | 11 |
| HBA | 2 | 2 | 4 |
| NHNA | 1 | 1 | 2 |
| NA | 1 | 1 | 2 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Yellowstone County population
78.9 mi, 
258°
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186°
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53.7 mi, 
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• Musselshell County
87.6 mi, 
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• Powder River County
75.2 mi, 
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• Prairie County
70.8 mi, 
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• Garfield County
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• Treasure County
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• Petroleum County
99.8 mi, 
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[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
*Custer Montana Notes
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