Last official estimated population of Fremont County was 40,224 (year 2014)[1]. This was 0.013% of total US population and 6.9% of total Wyoming state population. Area of Fremont County is 9,265.8 mi² (=23998.2 km²), in this year population density was 4.34 p/mi². If population growth rate would be same as in period 2010-2014 (+0.06%/yr), Fremont County population in 2026 would be 40,529 [0].
Historical population of Fremont County for period 1890-2014 [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

[1890-1900] +2.19 %/yr
[1900-1910] +8.24 %/yr
[1910-1920] -0 %/yr
[1920-1930] -1.19 %/yr
[1930-1940] +4.37 %/yr
[1940-1950] +1.98 %/yr
[1950-1960] +2.94 %/yr
[1960-1970] +0.8 %/yr
[1970-1980] +3.24 %/yr
[1980-1990] -1.46 %/yr
[1990-2000] +0.62 %/yr
[2000-2005] +0.57 %/yr
[2005-2010] +1.72 %/yr
[2010-2014] +0.06 %/yr
Looking for settlements in Fremont County? Visit this page: Settlements in Fremont County, WY
Population of Fremont County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1544 | 1496 | 3,040 |
| 5 to 9 | 1541 | 1484 | 3,025 |
| 10 to 14 | 1371 | 1325 | 2,696 |
| 15 to 19 | 1369 | 1193 | 2,562 |
| 20 to 24 | 1251 | 1178 | 2,429 |
| 25 to 29 | 1273 | 1249 | 2,522 |
| 30 to 34 | 1340 | 1333 | 2,673 |
| 35 to 39 | 1128 | 1072 | 2,200 |
| 40 to 44 | 1121 | 1035 | 2,156 |
| 45 to 49 | 1102 | 1109 | 2,211 |
| 50 to 54 | 1362 | 1396 | 2,758 |
| 55 to 59 | 1476 | 1528 | 3,004 |
| 60 to 64 | 1392 | 1428 | 2,820 |
| 65 to 69 | 1119 | 1130 | 2,249 |
| 70 to 74 | 778 | 814 | 1,592 |
| 75 to 79 | 541 | 633 | 1,174 |
| 80 to 84 | 337 | 470 | 807 |
| 85+ | 318 | 467 | 785 |
Fremont 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 |
| NH | 18932 | 19040 | 37,972 |
| WAC | 15846 | 15683 | 31,529 |
| WA | 15294 | 15119 | 30,413 |
| NHWAC | 14833 | 14745 | 29,578 |
| NHWA | 14353 | 14265 | 28,618 |
| IAC | 4667 | 4842 | 9,509 |
| NHIAC | 4214 | 4439 | 8,653 |
| IA | 4224 | 4395 | 8,619 |
| NHIA | 3834 | 4061 | 7,895 |
| H | 1431 | 1300 | 2,731 |
| HWAC | 1013 | 938 | 1,951 |
| HWA | 941 | 854 | 1,795 |
| TOM | 570 | 579 | 1,149 |
| NHTOM | 495 | 489 | 984 |
| HIAC | 453 | 403 | 856 |
| HIA | 390 | 334 | 724 |
| BAC | 227 | 177 | 404 |
| AAC | 180 | 205 | 385 |
| NHAAC | 171 | 188 | 359 |
| NHBAC | 198 | 151 | 349 |
| BA | 161 | 110 | 271 |
| NHBA | 143 | 100 | 243 |
| AA | 102 | 127 | 229 |
| NHAA | 99 | 120 | 219 |
| HTOM | 75 | 90 | 165 |
| NAC | 33 | 28 | 61 |
| HBAC | 29 | 26 | 55 |
| NHNAC | 27 | 18 | 45 |
| HBA | 18 | 10 | 28 |
| HAAC | 9 | 17 | 26 |
| NA | 12 | 10 | 22 |
| HNAC | 6 | 10 | 16 |
| NHNA | 8 | 5 | 13 |
| HAA | 3 | 7 | 10 |
| HNA | 4 | 5 | 9 |
• Natrona County population
93.3 mi,
93°
• Sweetwater County
97.3 mi,
188°
• Park County
110.8 mi,
333°
• Teton County
114 mi,
307°
• Lincoln County
119.8 mi,
241°
• Big Horn County
106.1 mi,
16°
• Sublette County
69.1 mi,
253°
• Johnson County
122.1 mi,
55°
• Washakie County
73.9 mi,
39°
• Hot Springs County
46.8 mi,
10°
[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
*Sweetwater; see note 1 Wyoming Notes
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