Last official estimated population of Asotin County was 21,697 (year 2014)[1]. This was 0.007% of total US population and 0.3% of total Washington state population. Area of Asotin County is 640.6 mi² (=1659.2 km²), in this year population density was 33.87 p/mi². If population growth rate would be same as in period 2010-2014 (+0.09%/yr), Asotin County population in 2025 would be 21,902 [0].
Historical population of Asotin 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] +7.86 %/yr
[1900-1910] +5.65 %/yr
[1910-1920] +1.15 %/yr
[1920-1930] +2.21 %/yr
[1930-1940] +0.28 %/yr
[1940-1950] +2.66 %/yr
[1950-1960] +1.73 %/yr
[1960-1970] +0.67 %/yr
[1970-1980] +2 %/yr
[1980-1990] +0.46 %/yr
[1990-2000] +1.56 %/yr
[2000-2005] +0.34 %/yr
[2005-2010] +0.67 %/yr
[2010-2014] +0.09 %/yr
Looking for settlements in Asotin County? Visit this page: Settlements in Asotin County, WA
Population of Asotin County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 568 | 639 | 1,207 |
| 5 to 9 | 637 | 669 | 1,306 |
| 10 to 14 | 623 | 705 | 1,328 |
| 15 to 19 | 620 | 608 | 1,228 |
| 20 to 24 | 640 | 632 | 1,272 |
| 25 to 29 | 627 | 644 | 1,271 |
| 30 to 34 | 635 | 665 | 1,300 |
| 35 to 39 | 583 | 602 | 1,185 |
| 40 to 44 | 592 | 606 | 1,198 |
| 45 to 49 | 618 | 651 | 1,269 |
| 50 to 54 | 749 | 831 | 1,580 |
| 55 to 59 | 805 | 957 | 1,762 |
| 60 to 64 | 824 | 826 | 1,650 |
| 65 to 69 | 659 | 755 | 1,414 |
| 70 to 74 | 565 | 603 | 1,168 |
| 75 to 79 | 438 | 438 | 876 |
| 80 to 84 | 256 | 308 | 564 |
| 85+ | 249 | 362 | 611 |
Asotin 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 | 10351 | 11077 | 21,428 |
| NH | 10318 | 11071 | 21,389 |
| WA | 10107 | 10837 | 20,944 |
| NHWAC | 10015 | 10673 | 20,688 |
| NHWA | 9796 | 10464 | 20,260 |
| H | 370 | 430 | 800 |
| HWAC | 336 | 404 | 740 |
| HWA | 311 | 373 | 684 |
| IAC | 299 | 324 | 623 |
| NHIAC | 262 | 290 | 552 |
| TOM | 261 | 267 | 528 |
| NHTOM | 236 | 236 | 472 |
| IA | 169 | 187 | 356 |
| AAC | 125 | 192 | 317 |
| NHIA | 146 | 169 | 315 |
| NHAAC | 119 | 182 | 301 |
| BAC | 148 | 137 | 285 |
| NHBAC | 134 | 127 | 261 |
| AA | 60 | 131 | 191 |
| NHAA | 56 | 126 | 182 |
| BA | 76 | 58 | 134 |
| NHBA | 71 | 57 | 128 |
| NAC | 39 | 45 | 84 |
| NHNAC | 35 | 42 | 77 |
| HIAC | 37 | 34 | 71 |
| HTOM | 25 | 31 | 56 |
| HIA | 23 | 18 | 41 |
| NA | 15 | 21 | 36 |
| NHNA | 13 | 19 | 32 |
| HBAC | 14 | 10 | 24 |
| HAAC | 6 | 10 | 16 |
| HAA | 4 | 5 | 9 |
| HNAC | 4 | 3 | 7 |
| HBA | 5 | 1 | 6 |
| HNA | 2 | 2 | 4 |
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[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
*Columbia Washington Notes
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