Last official estimated population of Power County was 7,851 (year 2014)[1]. This was 0.002% of total US population and 0.5% of total Idaho state population. Area of Power County is 1,442.7 mi² (=3736.5 km²), in this year population density was 5.44 p/mi². If population growth rate would be same as in period 2010-2014 (+0.11%/yr), Power County population in 2026 would be 7,954 [0].
Historical population of Power 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] -1.35 %/yr
[1930-1940] -1.16 %/yr
[1940-1950] +0.06 %/yr
[1950-1960] +0.3 %/yr
[1960-1970] +1.7 %/yr
[1970-1980] +3.47 %/yr
[1980-1990] +0.35 %/yr
[1990-2000] +0.63 %/yr
[2000-2005] -0.31 %/yr
[2005-2010] +1.03 %/yr
[2010-2014] +0.11 %/yr
Looking for settlements in Power County? Visit this page: Settlements in Power County, ID
Population of Power County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 364 | 389 | 753 |
| 5 to 9 | 338 | 313 | 651 |
| 10 to 14 | 309 | 260 | 569 |
| 15 to 19 | 270 | 266 | 536 |
| 20 to 24 | 249 | 224 | 473 |
| 25 to 29 | 241 | 216 | 457 |
| 30 to 34 | 199 | 219 | 418 |
| 35 to 39 | 215 | 203 | 418 |
| 40 to 44 | 192 | 180 | 372 |
| 45 to 49 | 221 | 211 | 432 |
| 50 to 54 | 249 | 236 | 485 |
| 55 to 59 | 274 | 253 | 527 |
| 60 to 64 | 252 | 217 | 469 |
| 65 to 69 | 167 | 183 | 350 |
| 70 to 74 | 138 | 142 | 280 |
| 75 to 79 | 92 | 96 | 188 |
| 80 to 84 | 66 | 70 | 136 |
| 85+ | 41 | 62 | 103 |
Power 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 | 3712 | 3542 | 7,254 |
| WA | 3656 | 3424 | 7,080 |
| NH | 2651 | 2596 | 5,247 |
| NHWAC | 2547 | 2469 | 5,016 |
| NHWA | 2501 | 2396 | 4,897 |
| H | 1226 | 1144 | 2,370 |
| HWAC | 1165 | 1073 | 2,238 |
| HWA | 1155 | 1028 | 2,183 |
| IAC | 140 | 213 | 353 |
| IA | 105 | 129 | 234 |
| NHIAC | 103 | 130 | 233 |
| TOM | 59 | 122 | 181 |
| NHIA | 76 | 86 | 162 |
| NHTOM | 48 | 74 | 122 |
| HIAC | 37 | 83 | 120 |
| BAC | 47 | 50 | 97 |
| AAC | 28 | 51 | 79 |
| BA | 37 | 36 | 73 |
| HIA | 29 | 43 | 72 |
| NHAAC | 24 | 44 | 68 |
| HTOM | 11 | 48 | 59 |
| HBAC | 30 | 26 | 56 |
| HBA | 29 | 23 | 52 |
| NHBAC | 17 | 24 | 41 |
| AA | 13 | 26 | 39 |
| NHAA | 13 | 25 | 38 |
| NHBA | 8 | 13 | 21 |
| NAC | 10 | 8 | 18 |
| NHNAC | 8 | 4 | 12 |
| HAAC | 4 | 7 | 11 |
| NA | 7 | 3 | 10 |
| NHNA | 5 | 2 | 7 |
| HNAC | 2 | 4 | 6 |
| HNA | 2 | 1 | 3 |
| HAA | 0 | 1 | 1 |
• Bannock County population
31.3 mi, 
90°
• Bingham County
42.5 mi, 
31°
• Cassia County
49 mi, 
234°
• Jerome County
72 mi, 
269°
• Minidoka County
41.9 mi, 
285°
• Franklin County
63.3 mi, 
124°
• Caribou County
66.3 mi, 
84°
• Lincoln County
69.3 mi, 286°
• Oneida County
38.9 mi, 
154°
• Butte County
70.5 mi, 
346°
[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
*Oneida, Blaine; Cassia Idaho Notes
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