Last official estimated population of Grand County was 14,786 (year 2014)[1]. This was 0.005% of total US population and 0.3% of total Colorado state population. Area of Grand County is 1,869.6 mi² (=4842.1 km²), in this year population density was 7.91 p/mi². If population growth rate would be same as in period 2010-2014 (-0.1%/yr), Grand County population in 2024 would be 14,644 [0].
Historical population of Grand 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] +3.77 %/yr
[1890-1900] +2.07 %/yr
[1900-1910] +9.65 %/yr
[1910-1920] +3.63 %/yr
[1920-1930] -2.3 %/yr
[1930-1940] +5.46 %/yr
[1940-1950] +1 %/yr
[1950-1960] -1.08 %/yr
[1960-1970] +1.45 %/yr
[1970-1980] +6.17 %/yr
[1980-1990] +0.64 %/yr
[1990-2000] +4.55 %/yr
[2000-2005] +1.85 %/yr
[2005-2010] +1.72 %/yr
[2010-2014] -0.1 %/yr
Looking for settlements in Grand County? Visit this page: Settlements in Grand County, CO
Population of Grand County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 294 | 312 | 606 |
| 5 to 9 | 371 | 414 | 785 |
| 10 to 14 | 454 | 393 | 847 |
| 15 to 19 | 362 | 359 | 721 |
| 20 to 24 | 423 | 350 | 773 |
| 25 to 29 | 536 | 462 | 998 |
| 30 to 34 | 524 | 425 | 949 |
| 35 to 39 | 509 | 435 | 944 |
| 40 to 44 | 566 | 430 | 996 |
| 45 to 49 | 503 | 484 | 987 |
| 50 to 54 | 604 | 600 | 1,204 |
| 55 to 59 | 744 | 703 | 1,447 |
| 60 to 64 | 712 | 555 | 1,267 |
| 65 to 69 | 509 | 409 | 918 |
| 70 to 74 | 302 | 239 | 541 |
| 75 to 79 | 149 | 113 | 262 |
| 80 to 84 | 96 | 75 | 171 |
| 85+ | 56 | 74 | 130 |
Grand 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 | 7512 | 6675 | 14,187 |
| WA | 7384 | 6528 | 13,912 |
| NH | 7126 | 6261 | 13,387 |
| NHWAC | 6983 | 6127 | 13,110 |
| NHWA | 6884 | 6026 | 12,910 |
| H | 588 | 571 | 1,159 |
| HWAC | 529 | 548 | 1,077 |
| HWA | 500 | 502 | 1,002 |
| TOM | 139 | 154 | 293 |
| IAC | 143 | 131 | 274 |
| NHTOM | 108 | 106 | 214 |
| AAC | 101 | 98 | 199 |
| NHAAC | 91 | 92 | 183 |
| NHIAC | 83 | 80 | 163 |
| BAC | 86 | 69 | 155 |
| AA | 65 | 71 | 136 |
| NHAA | 61 | 68 | 129 |
| NHBAC | 68 | 57 | 125 |
| IA | 68 | 43 | 111 |
| HIAC | 60 | 51 | 111 |
| HTOM | 31 | 48 | 79 |
| BA | 51 | 25 | 76 |
| NHBA | 39 | 24 | 63 |
| NHIA | 29 | 28 | 57 |
| HIA | 39 | 15 | 54 |
| NAC | 20 | 22 | 42 |
| NHNAC | 16 | 19 | 35 |
| HBAC | 18 | 12 | 30 |
| NA | 7 | 11 | 18 |
| HAAC | 10 | 6 | 16 |
| NHNA | 5 | 9 | 14 |
| HBA | 12 | 1 | 13 |
| HNAC | 4 | 3 | 7 |
| HAA | 4 | 3 | 7 |
| HNA | 2 | 2 | 4 |
• Jefferson County population
58.7 mi, 
129°
• Larimer County
48.9 mi, 
40°
• Boulder County
36.9 mi, 
93°
• Broomfield County
56.5 mi, 
102°
• Eagle County
46.7 mi, 
222°
• Summit County
34.8 mi, 
183°
• Routt County
53.2 mi, 
297°
• Clear Creek County
37.5 mi, 
143°
• Gilpin County
35.1 mi, 
121°
• Jackson County
39.3 mi, 
341°
[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
*Summit Colorado Notes
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