Last official estimated population of San Juan County was 708 (year 2014)[1]. This was 0% of total US population and 0% of total Colorado state population. Area of San Juan County is 388.3 mi² (=1005.7 km²), in this year population density was 1.82 p/mi². If population growth rate would be same as in period 2010-2014 (+0.32%/yr), San Juan County population in 2025 would be 733 [0].
Historical population of San Juan 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] +3.76 %/yr
[1890-1900] +4.07 %/yr
[1900-1910] +2.72 %/yr
[1910-1920] -5.72 %/yr
[1920-1930] +1.3 %/yr
[1930-1940] -2.92 %/yr
[1940-1950] +0.22 %/yr
[1950-1960] -5.35 %/yr
[1960-1970] -0.21 %/yr
[1970-1980] +0.02 %/yr
[1980-1990] -1.11 %/yr
[1990-2000] -2.85 %/yr
[2000-2005] +2.36 %/yr
[2005-2010] +2.2 %/yr
[2010-2014] +0.32 %/yr
Looking for settlements in San Juan County? Visit this page: Settlements in San Juan County, CO
Population of San Juan County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 11 | 4 | 15 |
| 5 to 9 | 16 | 15 | 31 |
| 10 to 14 | 21 | 12 | 33 |
| 15 to 19 | 24 | 9 | 33 |
| 20 to 24 | 14 | 8 | 22 |
| 25 to 29 | 17 | 29 | 46 |
| 30 to 34 | 30 | 23 | 53 |
| 35 to 39 | 22 | 27 | 49 |
| 40 to 44 | 35 | 20 | 55 |
| 45 to 49 | 27 | 16 | 43 |
| 50 to 54 | 32 | 24 | 56 |
| 55 to 59 | 45 | 30 | 75 |
| 60 to 64 | 29 | 33 | 62 |
| 65 to 69 | 40 | 31 | 71 |
| 70 to 74 | 30 | 16 | 46 |
| 75 to 79 | 11 | 6 | 17 |
| 80 to 84 | 4 | 4 | 8 |
| 85+ | 2 | 3 | 5 |
San Juan 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 | 402 | 297 | 699 |
| WA | 389 | 294 | 683 |
| NH | 355 | 263 | 618 |
| NHWAC | 349 | 253 | 602 |
| NHWA | 340 | 251 | 591 |
| H | 55 | 47 | 102 |
| HWAC | 53 | 44 | 97 |
| HWA | 49 | 43 | 92 |
| TOM | 14 | 6 | 20 |
| IAC | 11 | 7 | 18 |
| AAC | 9 | 8 | 17 |
| NHTOM | 10 | 4 | 14 |
| NHAAC | 6 | 7 | 13 |
| NHIAC | 9 | 3 | 12 |
| AA | 4 | 5 | 9 |
| NHAA | 3 | 5 | 8 |
| IA | 3 | 4 | 7 |
| HTOM | 4 | 2 | 6 |
| HIAC | 2 | 4 | 6 |
| BAC | 2 | 3 | 5 |
| HAAC | 3 | 1 | 4 |
| NHIA | 2 | 2 | 4 |
| NHBAC | 1 | 3 | 4 |
| HIA | 1 | 2 | 3 |
| NAC | 1 | 1 | 2 |
| NHNAC | 1 | 1 | 2 |
| HAA | 1 | 0 | 1 |
| HBAC | 1 | 0 | 1 |
| NHBA | 0 | 1 | 1 |
| BA | 0 | 1 | 1 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
| HBA | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
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54.1 mi, 
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• Hinsdale County
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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
*Conejos Colorado Notes
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