Last official estimated population of Crook County was 7,108 (year 2014)[1]. This was 0.002% of total US population and 1.2% of total Wyoming state population. Area of Crook County is 2,865.4 mi² (=7421.2 km²), in this year population density was 2.48 p/mi². If population growth rate would be same as in period 2010-2014 (+0.09%/yr), Crook County population in 2024 would be 7,171 [0].
Historical population of Crook 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] +25.62 %/yr
[1890-1900] +2.98 %/yr
[1900-1910] +7.54 %/yr
[1910-1920] -1.6 %/yr
[1920-1930] -0.35 %/yr
[1930-1940] +0.24 %/yr
[1940-1950] -1.41 %/yr
[1950-1960] -0.1 %/yr
[1960-1970] -0.34 %/yr
[1970-1980] +1.59 %/yr
[1980-1990] -0.03 %/yr
[1990-2000] +1.07 %/yr
[2000-2005] +0.97 %/yr
[2005-2010] +2.78 %/yr
[2010-2014] +0.09 %/yr
Looking for settlements in Crook County? Visit this page: Settlements in Crook County, WY
Population of Crook County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 220 | 259 | 479 |
| 5 to 9 | 254 | 243 | 497 |
| 10 to 14 | 231 | 232 | 463 |
| 15 to 19 | 235 | 208 | 443 |
| 20 to 24 | 194 | 153 | 347 |
| 25 to 29 | 191 | 175 | 366 |
| 30 to 34 | 209 | 202 | 411 |
| 35 to 39 | 202 | 155 | 357 |
| 40 to 44 | 174 | 193 | 367 |
| 45 to 49 | 221 | 209 | 430 |
| 50 to 54 | 277 | 293 | 570 |
| 55 to 59 | 307 | 332 | 639 |
| 60 to 64 | 298 | 278 | 576 |
| 65 to 69 | 222 | 210 | 432 |
| 70 to 74 | 175 | 191 | 366 |
| 75 to 79 | 118 | 97 | 215 |
| 80 to 84 | 85 | 63 | 148 |
| 85+ | 48 | 94 | 142 |
Crook 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 | 3572 | 3506 | 7,078 |
| NH | 3582 | 3481 | 7,063 |
| WA | 3521 | 3462 | 6,983 |
| NHWAC | 3509 | 3401 | 6,910 |
| NHWA | 3459 | 3359 | 6,818 |
| H | 79 | 106 | 185 |
| HWAC | 63 | 105 | 168 |
| HWA | 62 | 103 | 165 |
| IAC | 58 | 58 | 116 |
| NHIAC | 53 | 56 | 109 |
| BAC | 56 | 45 | 101 |
| TOM | 52 | 44 | 96 |
| NHTOM | 51 | 42 | 93 |
| NHBAC | 45 | 45 | 90 |
| BA | 45 | 34 | 79 |
| NHBA | 34 | 34 | 68 |
| IA | 29 | 35 | 64 |
| NHIA | 25 | 34 | 59 |
| AAC | 26 | 21 | 47 |
| NHAAC | 25 | 20 | 45 |
| AA | 14 | 12 | 26 |
| NHAA | 13 | 12 | 25 |
| HBA | 11 | 0 | 11 |
| HBAC | 11 | 0 | 11 |
| HIAC | 5 | 2 | 7 |
| NAC | 4 | 1 | 5 |
| NHNAC | 4 | 1 | 5 |
| HIA | 4 | 1 | 5 |
| HTOM | 1 | 2 | 3 |
| HAAC | 1 | 1 | 2 |
| HAA | 1 | 0 | 1 |
| HNAC | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Pennington County population
95.3 mi, 
115°
• Campbell County
54.3 mi, 
239°
• Meade County
91.2 mi, 
89°
• Lawrence County
41.1 mi, 
113°
• Butte County
56.4 mi, 
67°
• Custer County
83.1 mi, 
138°
• Weston County
51.3 mi, 
180°
• Powder River County
74.4 mi, 
319°
• Harding County
87.7 mi, 
37°
• Carter County
64.1 mi, 
2°
[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
*Laramie, Albany Wyoming Notes
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