Last official estimated population of Elmore County was 27,108 (year 2014)[1]. This was 0.009% of total US population and 1.6% of total Idaho state population. Area of Elmore County is 3,100.8 mi² (=8030.9 km²), in this year population density was 8.74 p/mi². If population growth rate would be same as in period 2010-2014 (+0.06%/yr), Elmore County population in 2025 would be 27,301 [0].
Historical population of Elmore 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] +2.03 %/yr
[1900-1910] +7.67 %/yr
[1910-1920] +0.61 %/yr
[1920-1930] -1.24 %/yr
[1930-1940] +2.08 %/yr
[1940-1950] +1.94 %/yr
[1950-1960] +9.6 %/yr
[1960-1970] +0.45 %/yr
[1970-1980] +2.12 %/yr
[1980-1990] -0.17 %/yr
[1990-2000] +3.22 %/yr
[2000-2005] -2.3 %/yr
[2005-2010] +0.85 %/yr
[2010-2014] +0.06 %/yr
Looking for settlements in Elmore County? Visit this page: Settlements in Elmore County, ID
Population of Elmore County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1074 | 1021 | 2,095 |
| 5 to 9 | 1005 | 980 | 1,985 |
| 10 to 14 | 915 | 849 | 1,764 |
| 15 to 19 | 894 | 809 | 1,703 |
| 20 to 24 | 1774 | 1079 | 2,853 |
| 25 to 29 | 1235 | 1013 | 2,248 |
| 30 to 34 | 992 | 888 | 1,880 |
| 35 to 39 | 745 | 736 | 1,481 |
| 40 to 44 | 717 | 653 | 1,370 |
| 45 to 49 | 663 | 682 | 1,345 |
| 50 to 54 | 807 | 796 | 1,603 |
| 55 to 59 | 739 | 753 | 1,492 |
| 60 to 64 | 616 | 572 | 1,188 |
| 65 to 69 | 504 | 499 | 1,003 |
| 70 to 74 | 387 | 448 | 835 |
| 75 to 79 | 269 | 304 | 573 |
| 80 to 84 | 178 | 183 | 361 |
| 85+ | 110 | 205 | 315 |
Elmore 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 | 12508 | 11452 | 23,960 |
| WA | 12094 | 11016 | 23,110 |
| NH | 11346 | 10508 | 21,854 |
| NHWAC | 10414 | 9641 | 20,055 |
| NHWA | 10070 | 9277 | 19,347 |
| H | 2278 | 1962 | 4,240 |
| HWAC | 2094 | 1811 | 3,905 |
| HWA | 2024 | 1739 | 3,763 |
| AAC | 498 | 567 | 1,065 |
| BAC | 595 | 438 | 1,033 |
| NHAAC | 453 | 532 | 985 |
| NHBAC | 541 | 389 | 930 |
| TOM | 435 | 453 | 888 |
| BA | 499 | 329 | 828 |
| IAC | 394 | 408 | 802 |
| NHBA | 460 | 295 | 755 |
| NHTOM | 357 | 378 | 735 |
| AA | 330 | 397 | 727 |
| NHAA | 307 | 385 | 692 |
| NHIAC | 234 | 269 | 503 |
| IA | 208 | 219 | 427 |
| HIAC | 160 | 139 | 299 |
| NHIA | 103 | 123 | 226 |
| NAC | 113 | 93 | 206 |
| HIA | 105 | 96 | 201 |
| NHNAC | 95 | 81 | 176 |
| HTOM | 78 | 75 | 153 |
| NA | 58 | 56 | 114 |
| HBAC | 54 | 49 | 103 |
| NHNA | 49 | 50 | 99 |
| HAAC | 45 | 35 | 80 |
| HBA | 39 | 34 | 73 |
| HAA | 23 | 12 | 35 |
| HNAC | 18 | 12 | 30 |
| HNA | 9 | 6 | 15 |
• Ada County population
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275°
• Canyon County
64 mi, 284°
• Payette County
76.4 mi, 
303°
• Blaine County
76.1 mi, 
90°
• Gem County
65.3 mi, 
314°
• Gooding County
43.8 mi, 
131°
• Owyhee County
67.4 mi, 
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• Boise County
42.7 mi, 
343°
• Lincoln County
72.1 mi, 
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• Camas County
33.8 mi, 
81°
[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
*Alturas Idaho Notes
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