Last official estimated population of Sevier County was 20,804 (year 2014)[1]. This was 0.007% of total US population and 0.7% of total Utah state population. Area of Sevier County is 1,918.3 mi² (=4968.4 km²), in this year population density was 10.85 p/mi². If population growth rate would be same as in period 2010-2014 (+0%/yr), Sevier County population in 2026 would be 20,810 [0].
Historical population of Sevier County for period 1870-2014 [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

[1870-1880] +72.6 %/yr
[1880-1890] +3.35 %/yr
[1890-1900] +3.15 %/yr
[1900-1910] +1.47 %/yr
[1910-1920] +1.44 %/yr
[1920-1930] -0.07 %/yr
[1930-1940] +0.79 %/yr
[1940-1950] -0.03 %/yr
[1950-1960] -1.32 %/yr
[1960-1970] -0.45 %/yr
[1970-1980] +3.84 %/yr
[1980-1990] +0.47 %/yr
[1990-2000] +2.02 %/yr
[2000-2005] +0.6 %/yr
[2005-2010] +1.39 %/yr
[2010-2014] +0 %/yr
Looking for settlements in Sevier County? Visit this page: Settlements in Sevier County, UT
Population of Sevier County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 744 | 708 | 1,452 |
| 5 to 9 | 936 | 869 | 1,805 |
| 10 to 14 | 979 | 901 | 1,880 |
| 15 to 19 | 907 | 755 | 1,662 |
| 20 to 24 | 627 | 540 | 1,167 |
| 25 to 29 | 502 | 553 | 1,055 |
| 30 to 34 | 691 | 693 | 1,384 |
| 35 to 39 | 765 | 687 | 1,452 |
| 40 to 44 | 597 | 535 | 1,132 |
| 45 to 49 | 493 | 465 | 958 |
| 50 to 54 | 594 | 651 | 1,245 |
| 55 to 59 | 605 | 604 | 1,209 |
| 60 to 64 | 545 | 563 | 1,108 |
| 65 to 69 | 444 | 519 | 963 |
| 70 to 74 | 430 | 409 | 839 |
| 75 to 79 | 323 | 319 | 642 |
| 80 to 84 | 221 | 230 | 451 |
| 85+ | 170 | 199 | 369 |
Sevier 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 | 10334 | 9940 | 20,274 |
| WA | 10225 | 9814 | 20,039 |
| NH | 10067 | 9681 | 19,748 |
| NHWAC | 9883 | 9479 | 19,362 |
| NHWA | 9791 | 9373 | 19,164 |
| H | 506 | 519 | 1,025 |
| HWAC | 451 | 461 | 912 |
| HWA | 434 | 441 | 875 |
| IAC | 194 | 224 | 418 |
| IA | 139 | 169 | 308 |
| NHIAC | 139 | 162 | 301 |
| TOM | 117 | 133 | 250 |
| NHIA | 95 | 119 | 214 |
| NHTOM | 100 | 112 | 212 |
| AAC | 54 | 83 | 137 |
| BAC | 73 | 59 | 132 |
| NHAAC | 45 | 77 | 122 |
| HIAC | 55 | 62 | 117 |
| NHBAC | 65 | 48 | 113 |
| HIA | 44 | 50 | 94 |
| AA | 38 | 51 | 89 |
| NHAA | 31 | 46 | 77 |
| NAC | 35 | 27 | 62 |
| NHNAC | 35 | 27 | 62 |
| BA | 34 | 19 | 53 |
| NHBA | 30 | 17 | 47 |
| HTOM | 17 | 21 | 38 |
| NA | 20 | 14 | 34 |
| NHNA | 20 | 14 | 34 |
| HBAC | 8 | 11 | 19 |
| HAAC | 9 | 6 | 15 |
| HAA | 7 | 5 | 12 |
| HBA | 4 | 2 | 6 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Utah County population
95.2 mi,
4°
• Sanpete County
45.8 mi,
16°
• Carbon County
91.6 mi,
45°
• Millard County
95.2 mi,
284°
• Emery County
61.4 mi,
72°
• Juab County
84.9 mi,
321°
• Beaver County
81.7 mi,
250°
• Garfield County
66.2 mi,
162°
• Wayne County
55.7 mi,
127°
• Piute County
33.2 mi,
211°
[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
*Sanpete, Millard Utah Notes
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