Last official estimated population of Yakima County was 244,146 (year 2014)[1]. This was 0.077% of total US population and 3.4% of total Washington state population. Area of Yakima County is 4,311.4 mi² (=11166.6 km²), in this year population density was 56.63 p/mi². If population growth rate would be same as in period 2010-2014 (+0.09%/yr), Yakima County population in 2025 would be 246,680 [0].
Historical population of Yakima 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] +20.6 %/yr
[1880-1890] +4.65 %/yr
[1890-1900] +11.76 %/yr
[1900-1910] +11.97 %/yr
[1910-1920] +4.33 %/yr
[1920-1930] +1.97 %/yr
[1930-1940] +2.49 %/yr
[1940-1950] +3.2 %/yr
[1950-1960] +0.67 %/yr
[1960-1970] -0.01 %/yr
[1970-1980] +1.75 %/yr
[1980-1990] +0.91 %/yr
[1990-2000] +1.66 %/yr
[2000-2005] +0.53 %/yr
[2005-2010] +1.25 %/yr
[2010-2014] +0.09 %/yr
Looking for settlements in Yakima County? Visit this page: Settlements in Yakima County, WA
Population of Yakima County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 10759 | 10106 | 20,865 |
| 5 to 9 | 10830 | 10336 | 21,166 |
| 10 to 14 | 10298 | 9926 | 20,224 |
| 15 to 19 | 9514 | 8957 | 18,471 |
| 20 to 24 | 9557 | 8680 | 18,237 |
| 25 to 29 | 8419 | 7936 | 16,355 |
| 30 to 34 | 7893 | 7920 | 15,813 |
| 35 to 39 | 7458 | 7414 | 14,872 |
| 40 to 44 | 7237 | 7281 | 14,518 |
| 45 to 49 | 7059 | 6883 | 13,942 |
| 50 to 54 | 7420 | 7359 | 14,779 |
| 55 to 59 | 7039 | 7119 | 14,158 |
| 60 to 64 | 6051 | 6517 | 12,568 |
| 65 to 69 | 5157 | 5291 | 10,448 |
| 70 to 74 | 3663 | 4121 | 7,784 |
| 75 to 79 | 2445 | 2860 | 5,305 |
| 80 to 84 | 1624 | 2232 | 3,856 |
| 85+ | 1611 | 2715 | 4,326 |
Yakima 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 | 112189 | 112104 | 224,293 |
| WA | 109025 | 108834 | 217,859 |
| NH | 63363 | 66197 | 129,560 |
| H | 60671 | 57456 | 118,127 |
| NHWAC | 56276 | 59047 | 115,323 |
| NHWA | 54372 | 57008 | 111,380 |
| HWAC | 55913 | 53057 | 108,970 |
| HWA | 54653 | 51826 | 106,479 |
| IAC | 9577 | 9553 | 19,130 |
| IA | 7555 | 7412 | 14,967 |
| NHIAC | 5530 | 5792 | 11,322 |
| NHIA | 4500 | 4603 | 9,103 |
| HIAC | 4047 | 3761 | 7,808 |
| TOM | 3439 | 3549 | 6,988 |
| HIA | 3055 | 2809 | 5,864 |
| AAC | 2649 | 2974 | 5,623 |
| BAC | 2896 | 2478 | 5,374 |
| NHTOM | 2039 | 2197 | 4,236 |
| NHAAC | 1827 | 2183 | 4,010 |
| BA | 2066 | 1625 | 3,691 |
| AA | 1653 | 1951 | 3,604 |
| NHBAC | 1695 | 1339 | 3,034 |
| HTOM | 1400 | 1352 | 2,752 |
| NHAA | 1174 | 1506 | 2,680 |
| HBAC | 1201 | 1139 | 2,340 |
| NHBA | 1164 | 805 | 1,969 |
| HBA | 902 | 820 | 1,722 |
| HAAC | 822 | 791 | 1,613 |
| NAC | 571 | 567 | 1,138 |
| HAA | 479 | 445 | 924 |
| HNAC | 295 | 318 | 613 |
| NA | 296 | 282 | 578 |
| NHNAC | 276 | 249 | 525 |
| HNA | 182 | 204 | 386 |
| NHNA | 114 | 78 | 192 |
• Pierce County population
78.5 mi,
301°
• Benton County
60.5 mi,
105°
• Grant County
79.7 mi,
48°
• Lewis County
78.3 mi,
276°
• Kittitas County
46.2 mi,
3°
• Hood River County
78.7 mi,
213°
• Klickitat County
40.6 mi,
182°
• Skamania County
65.2 mi,
242°
• Gilliam County
77.5 mi,
163°
• Sherman County
73.1 mi,
177°
[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
*Walla Walla; Klickitat Washington Notes
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