Last official estimated population of Malheur County was 31,332 (year 2014)[1]. This was 0.01% of total US population and 0.8% of total Oregon state population. Area of Malheur County is 9,929.7 mi² (=25717.7 km²), in this year population density was 3.16 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Malheur County population in 2026 would be 31,389 [0].
Historical population of Malheur 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] +4.92 %/yr
[1900-1910] +7.42 %/yr
[1910-1920] +2.4 %/yr
[1920-1930] +0.33 %/yr
[1930-1940] +5.78 %/yr
[1940-1950] +1.62 %/yr
[1950-1960] -0.2 %/yr
[1960-1970] +0.18 %/yr
[1970-1980] +1.5 %/yr
[1980-1990] -0.32 %/yr
[1990-2000] +1.96 %/yr
[2000-2005] -0.22 %/yr
[2005-2010] +0.03 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Malheur County? Visit this page: Settlements in Malheur County, OR
Population of Malheur County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1109 | 1029 | 2,138 |
| 5 to 9 | 1122 | 1069 | 2,191 |
| 10 to 14 | 1054 | 1026 | 2,080 |
| 15 to 19 | 1068 | 992 | 2,060 |
| 20 to 24 | 1322 | 842 | 2,164 |
| 25 to 29 | 1196 | 762 | 1,958 |
| 30 to 34 | 1181 | 825 | 2,006 |
| 35 to 39 | 1125 | 733 | 1,858 |
| 40 to 44 | 1118 | 741 | 1,859 |
| 45 to 49 | 1061 | 713 | 1,774 |
| 50 to 54 | 1019 | 856 | 1,875 |
| 55 to 59 | 1000 | 839 | 1,839 |
| 60 to 64 | 902 | 866 | 1,768 |
| 65 to 69 | 736 | 718 | 1,454 |
| 70 to 74 | 555 | 586 | 1,141 |
| 75 to 79 | 437 | 479 | 916 |
| 80 to 84 | 272 | 327 | 599 |
| 85+ | 282 | 397 | 679 |
Malheur 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 | 15507 | 13137 | 28,644 |
| WA | 15172 | 12818 | 27,990 |
| NH | 11151 | 9171 | 20,322 |
| NHWAC | 10398 | 8785 | 19,183 |
| NHWA | 10167 | 8561 | 18,728 |
| H | 5408 | 4629 | 10,037 |
| HWAC | 5109 | 4352 | 9,461 |
| HWA | 5005 | 4257 | 9,262 |
| IAC | 564 | 456 | 1,020 |
| AAC | 371 | 339 | 710 |
| TOM | 356 | 337 | 693 |
| NHAAC | 324 | 301 | 625 |
| IA | 360 | 260 | 620 |
| BAC | 434 | 147 | 581 |
| AA | 286 | 253 | 539 |
| HIAC | 272 | 246 | 518 |
| NHIAC | 292 | 210 | 502 |
| NHAA | 257 | 229 | 486 |
| NHTOM | 245 | 235 | 480 |
| BA | 356 | 101 | 457 |
| NHBAC | 364 | 84 | 448 |
| HIA | 193 | 171 | 364 |
| NHBA | 311 | 51 | 362 |
| NHIA | 167 | 89 | 256 |
| HTOM | 111 | 102 | 213 |
| HBAC | 70 | 63 | 133 |
| NAC | 53 | 62 | 115 |
| HBA | 45 | 50 | 95 |
| HAAC | 47 | 38 | 85 |
| HNAC | 29 | 33 | 62 |
| NA | 29 | 31 | 60 |
| HAA | 29 | 24 | 53 |
| NHNAC | 24 | 29 | 53 |
| HNA | 25 | 25 | 50 |
| NHNA | 4 | 6 | 10 |
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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
*Baker Oregon Notes
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