Last official estimated population of Big Horn County was 11,674 (year 2014)[1]. This was 0.004% of total US population and 2% of total Wyoming state population. Area of Big Horn County is 3,158.3 mi² (=8179.9 km²), in this year population density was 3.70 p/mi². If population growth rate would be same as in period 2010-2014 (+0.01%/yr), Big Horn County population in 2024 would be 11,689 [0].
Historical population of Big Horn County for period 1900-2014 [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
[1900-1910] +7.46 %/yr
[1910-1920] +3.14 %/yr
[1920-1930] -0.75 %/yr
[1930-1940] +1.41 %/yr
[1940-1950] +0.2 %/yr
[1950-1960] -1.02 %/yr
[1960-1970] -1.53 %/yr
[1970-1980] +1.55 %/yr
[1980-1990] -1.22 %/yr
[1990-2000] +0.84 %/yr
[2000-2005] -0.44 %/yr
[2005-2010] +0.83 %/yr
[2010-2014] +0.01 %/yr
Looking for settlements in Big Horn County? Visit this page: Settlements in Big Horn County, WY
Population of Big Horn County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 377 | 401 | 778 |
| 5 to 9 | 420 | 430 | 850 |
| 10 to 14 | 417 | 425 | 842 |
| 15 to 19 | 415 | 440 | 855 |
| 20 to 24 | 350 | 254 | 604 |
| 25 to 29 | 314 | 301 | 615 |
| 30 to 34 | 320 | 311 | 631 |
| 35 to 39 | 334 | 295 | 629 |
| 40 to 44 | 333 | 309 | 642 |
| 45 to 49 | 338 | 348 | 686 |
| 50 to 54 | 407 | 387 | 794 |
| 55 to 59 | 440 | 432 | 872 |
| 60 to 64 | 418 | 427 | 845 |
| 65 to 69 | 375 | 366 | 741 |
| 70 to 74 | 297 | 295 | 592 |
| 75 to 79 | 197 | 211 | 408 |
| 80 to 84 | 136 | 149 | 285 |
| 85+ | 116 | 145 | 261 |
Big Horn 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 | 5834 | 5762 | 11,596 |
| WA | 5776 | 5667 | 11,443 |
| NH | 5455 | 5395 | 10,850 |
| NHWAC | 5326 | 5263 | 10,589 |
| NHWA | 5282 | 5189 | 10,471 |
| H | 549 | 531 | 1,080 |
| HWAC | 508 | 499 | 1,007 |
| HWA | 494 | 478 | 972 |
| IAC | 124 | 136 | 260 |
| NHIAC | 83 | 101 | 184 |
| TOM | 60 | 103 | 163 |
| IA | 84 | 73 | 157 |
| BAC | 70 | 81 | 151 |
| NHBAC | 61 | 67 | 128 |
| NHTOM | 45 | 81 | 126 |
| BA | 55 | 56 | 111 |
| NHIA | 55 | 52 | 107 |
| NHBA | 49 | 46 | 95 |
| AAC | 33 | 46 | 79 |
| HIAC | 41 | 35 | 76 |
| NHAAC | 28 | 41 | 69 |
| AA | 27 | 26 | 53 |
| HIA | 29 | 21 | 50 |
| NHAA | 23 | 26 | 49 |
| HTOM | 15 | 22 | 37 |
| HBAC | 9 | 14 | 23 |
| HBA | 6 | 10 | 16 |
| NAC | 5 | 7 | 12 |
| HAAC | 5 | 5 | 10 |
| NHNAC | 3 | 7 | 10 |
| HAA | 4 | 0 | 4 |
| NA | 2 | 1 | 3 |
| HNAC | 2 | 0 | 2 |
| NHNA | 1 | 1 | 2 |
| HNA | 1 | 0 | 1 |
• Yellowstone County population
98.5 mi, 
351°
• Fremont County
106.1 mi, 
196°
• Sheridan County
57.5 mi, 
72°
• Park County
78.8 mi, 
268°
• Big Horn County
65.3 mi, 
20°
• Carbon County
70 mi, 
313°
• Stillwater County
103.5 mi, 
319°
• Johnson County
77.1 mi, 
115°
• Washakie County
47.5 mi, 
160°
• Hot Springs County
59.7 mi, 201°
[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
*Fremont, Johnson, Sheridan Wyoming Notes
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