Last official estimated population of Duchesne County was 18,612 (year 2014)[1]. This was 0.006% of total US population and 0.6% of total Utah state population. Area of Duchesne County is 3,250.3 mi² (=8418.3 km²), in this year population density was 5.73 p/mi². If population growth rate would be same as in period 2010-2014 (+0.01%/yr), Duchesne County population in 2026 would be 18,627 [0].
Historical population of Duchesne 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] -0.95 %/yr
[1930-1940] +0.81 %/yr
[1940-1950] -0.96 %/yr
[1950-1960] -1.24 %/yr
[1960-1970] +0.17 %/yr
[1970-1980] +5.58 %/yr
[1980-1990] +0.06 %/yr
[1990-2000] +1.33 %/yr
[2000-2005] +1.4 %/yr
[2005-2010] +3.76 %/yr
[2010-2014] +0.01 %/yr
Looking for settlements in Duchesne County? Visit this page: Settlements in Duchesne County, UT
Population of Duchesne County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1076 | 1052 | 2,128 |
| 5 to 9 | 1000 | 1008 | 2,008 |
| 10 to 14 | 960 | 862 | 1,822 |
| 15 to 19 | 762 | 728 | 1,490 |
| 20 to 24 | 652 | 629 | 1,281 |
| 25 to 29 | 714 | 694 | 1,408 |
| 30 to 34 | 825 | 764 | 1,589 |
| 35 to 39 | 743 | 640 | 1,383 |
| 40 to 44 | 551 | 509 | 1,060 |
| 45 to 49 | 471 | 464 | 935 |
| 50 to 54 | 533 | 533 | 1,066 |
| 55 to 59 | 581 | 522 | 1,103 |
| 60 to 64 | 455 | 424 | 879 |
| 65 to 69 | 353 | 346 | 699 |
| 70 to 74 | 299 | 298 | 597 |
| 75 to 79 | 197 | 200 | 397 |
| 80 to 84 | 143 | 151 | 294 |
| 85+ | 90 | 151 | 241 |
Duchesne 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 | 9753 | 9364 | 19,117 |
| NH | 9531 | 9207 | 18,738 |
| WA | 9537 | 9135 | 18,672 |
| NHWAC | 9044 | 8716 | 17,760 |
| NHWA | 8854 | 8515 | 17,369 |
| H | 874 | 768 | 1,642 |
| HWAC | 709 | 648 | 1,357 |
| HWA | 683 | 620 | 1,303 |
| IAC | 622 | 615 | 1,237 |
| NHIAC | 479 | 506 | 985 |
| IA | 473 | 455 | 928 |
| NHIA | 348 | 364 | 712 |
| TOM | 232 | 246 | 478 |
| NHTOM | 204 | 216 | 420 |
| HIAC | 143 | 109 | 252 |
| BAC | 121 | 103 | 224 |
| HIA | 125 | 91 | 216 |
| AAC | 76 | 101 | 177 |
| NHBAC | 90 | 79 | 169 |
| NHAAC | 65 | 88 | 153 |
| NAC | 79 | 55 | 134 |
| BA | 74 | 43 | 117 |
| NHNAC | 70 | 47 | 117 |
| AA | 41 | 65 | 106 |
| NHAA | 33 | 58 | 91 |
| NA | 48 | 31 | 79 |
| NHBA | 50 | 27 | 77 |
| NHNA | 42 | 27 | 69 |
| HTOM | 28 | 30 | 58 |
| HBAC | 31 | 24 | 55 |
| HBA | 24 | 16 | 40 |
| HAAC | 11 | 13 | 24 |
| HNAC | 9 | 8 | 17 |
| HAA | 8 | 7 | 15 |
| HNA | 6 | 4 | 10 |
• Salt Lake County population
82.8 mi, 
288°
• Utah County
66.4 mi, 
259°
• Summit County
49.2 mi, 
324°
• Uintah County
49.4 mi, 
103°
• Sanpete County
87.2 mi, 
224°
• Wasatch County
38.7 mi, 
274°
• Carbon County
43.4 mi, 
191°
• Uinta County
69.1 mi, 
354°
• Morgan County
81.7 mi, 
312°
• Daggett County
63.8 mi, 
49°
[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
*Wasatch; Uintah Utah Notes
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