Last official estimated population of Stillwater County was 9,111 (year 2014)[1]. This was 0.003% of total US population and 0.9% of total Montana state population. Area of Stillwater County is 1,805.9 mi² (=4677.3 km²), in this year population density was 5.05 p/mi². If population growth rate would be same as in period 2010-2014 (-0.02%/yr), Stillwater County population in 2024 would be 9,096 [0].
Historical population of Stillwater County for period 1920-2014 [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
[1920-1930] -1.97 %/yr
[1930-1940] -0.93 %/yr
[1940-1950] -0.5 %/yr
[1950-1960] +0.2 %/yr
[1960-1970] -1.75 %/yr
[1970-1980] +1.91 %/yr
[1980-1990] +1.56 %/yr
[1990-2000] +2.32 %/yr
[2000-2005] +0.62 %/yr
[2005-2010] +1.46 %/yr
[2010-2014] -0.02 %/yr
Looking for settlements in Stillwater County? Visit this page: Settlements in Stillwater County, MT
Population of Stillwater County by age groups male (M) and female (F)[1b]
Age Gr. | (M) | (F) | Total |
0 to 4 | 217 | 213 | 430 |
5 to 9 | 306 | 260 | 566 |
10 to 14 | 323 | 310 | 633 |
15 to 19 | 296 | 262 | 558 |
20 to 24 | 216 | 186 | 402 |
25 to 29 | 177 | 163 | 340 |
30 to 34 | 216 | 237 | 453 |
35 to 39 | 249 | 256 | 505 |
40 to 44 | 274 | 252 | 526 |
45 to 49 | 276 | 291 | 567 |
50 to 54 | 354 | 368 | 722 |
55 to 59 | 434 | 423 | 857 |
60 to 64 | 441 | 423 | 864 |
65 to 69 | 353 | 311 | 664 |
70 to 74 | 252 | 245 | 497 |
75 to 79 | 170 | 137 | 307 |
80 to 84 | 110 | 100 | 210 |
85+ | 72 | 117 | 189 |
Stillwater 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 | 4649 | 4465 | 9,114 |
NH | 4584 | 4403 | 8,987 |
WA | 4576 | 4370 | 8,946 |
NHWAC | 4515 | 4330 | 8,845 |
NHWA | 4453 | 4242 | 8,695 |
H | 152 | 151 | 303 |
HWAC | 134 | 135 | 269 |
HWA | 123 | 128 | 251 |
IAC | 105 | 108 | 213 |
NHIAC | 83 | 97 | 180 |
TOM | 77 | 99 | 176 |
NHTOM | 65 | 91 | 156 |
IA | 52 | 44 | 96 |
NHIA | 40 | 36 | 76 |
AAC | 26 | 47 | 73 |
NHAAC | 23 | 43 | 66 |
BAC | 30 | 35 | 65 |
NHBAC | 24 | 27 | 51 |
AA | 13 | 27 | 40 |
NHAA | 12 | 26 | 38 |
HIAC | 22 | 11 | 33 |
BA | 16 | 13 | 29 |
HTOM | 12 | 8 | 20 |
NHBA | 12 | 8 | 20 |
HIA | 12 | 8 | 20 |
HBAC | 6 | 8 | 14 |
NAC | 7 | 6 | 13 |
NHNAC | 7 | 5 | 12 |
HBA | 4 | 5 | 9 |
HAAC | 3 | 4 | 7 |
NA | 2 | 1 | 3 |
NHNA | 2 | 0 | 2 |
HAA | 1 | 1 | 2 |
HNAC | 0 | 1 | 1 |
HNA | 0 | 1 | 1 |
• Yellowstone County population
56.6 mi, 70°
• Gallatin County
86.7 mi, 263°
• Park County
81.3 mi, 187°
• Park County
58 mi, 253°
• Big Horn County
91.9 mi, 100°
• Carbon County
34.6 mi, 150°
• Musselshell County
73.9 mi, 37°
• Sweet Grass County
29 mi, 291°
• Wheatland County
62.2 mi, 338°
• Golden Valley County
50.8 mi, 11°
[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
*Yellowstone, Sweet Grass, Carbon Montana Notes
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