Last official estimated population of Adair County was 22,720 (year 2014)[1]. This was 0.007% of total US population and 0.6% of total Oklahoma state population. Area of Adair County is 577.1 mi² (=1494.6 km²), in this year population density was 39.37 p/mi². If population growth rate would be same as in period 2010-2014 (+0.04%/yr), Adair County population in 2026 would be 22,831 [0].
Historical population of Adair County for period 1880-2014 [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
[1880-1890] NAN %/yr
[1890-1900] +INF %/yr
[1900-1910] +1.46 %/yr
[1910-1920] +2.66 %/yr
[1920-1930] +0.74 %/yr
[1930-1940] +0.66 %/yr
[1940-1950] -0.54 %/yr
[1950-1960] -1.28 %/yr
[1960-1970] +1.45 %/yr
[1970-1980] +2.07 %/yr
[1980-1990] -0.08 %/yr
[1990-2000] +1.32 %/yr
[2000-2005] +0.82 %/yr
[2005-2010] +0.72 %/yr
[2010-2014] +0.04 %/yr
Looking for settlements in Adair County? Visit this page: Settlements in Adair County, OK
Population of Adair County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 822 | 683 | 1,505 |
| 5 to 9 | 861 | 837 | 1,698 |
| 10 to 14 | 898 | 803 | 1,701 |
| 15 to 19 | 844 | 750 | 1,594 |
| 20 to 24 | 705 | 743 | 1,448 |
| 25 to 29 | 599 | 606 | 1,205 |
| 30 to 34 | 653 | 678 | 1,331 |
| 35 to 39 | 681 | 652 | 1,333 |
| 40 to 44 | 707 | 712 | 1,419 |
| 45 to 49 | 725 | 705 | 1,430 |
| 50 to 54 | 799 | 775 | 1,574 |
| 55 to 59 | 712 | 727 | 1,439 |
| 60 to 64 | 635 | 655 | 1,290 |
| 65 to 69 | 563 | 556 | 1,119 |
| 70 to 74 | 428 | 441 | 869 |
| 75 to 79 | 281 | 295 | 576 |
| 80 to 84 | 158 | 226 | 384 |
| 85+ | 88 | 183 | 271 |
Adair 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 |
| NH | 10432 | 10391 | 20,823 |
| WAC | 6129 | 6001 | 12,130 |
| IAC | 5977 | 5962 | 11,939 |
| NHWAC | 5780 | 5657 | 11,437 |
| NHIAC | 5562 | 5650 | 11,212 |
| WA | 4975 | 4915 | 9,890 |
| IA | 4868 | 4899 | 9,767 |
| NHWA | 4685 | 4614 | 9,299 |
| NHIA | 4501 | 4619 | 9,120 |
| TOM | 1174 | 1117 | 2,291 |
| NHTOM | 1112 | 1074 | 2,186 |
| H | 727 | 636 | 1,363 |
| HIAC | 415 | 312 | 727 |
| HWAC | 349 | 344 | 693 |
| HIA | 367 | 280 | 647 |
| HWA | 290 | 301 | 591 |
| BAC | 135 | 115 | 250 |
| NHBAC | 113 | 96 | 209 |
| AAC | 103 | 80 | 183 |
| NHAAC | 99 | 74 | 173 |
| AA | 70 | 54 | 124 |
| NHAA | 70 | 52 | 122 |
| BA | 71 | 41 | 112 |
| HTOM | 62 | 43 | 105 |
| NHBA | 63 | 31 | 94 |
| HBAC | 22 | 19 | 41 |
| HBA | 8 | 10 | 18 |
| NAC | 9 | 8 | 17 |
| NHNAC | 8 | 8 | 16 |
| HAAC | 4 | 6 | 10 |
| NA | 1 | 1 | 2 |
| NHNA | 1 | 1 | 2 |
| HAA | 0 | 2 | 2 |
| HNAC | 1 | 0 | 1 |
| HNA | 0 | 0 | 0 |
• Benton County population
37.5 mi, 
35°
• Washington County
24.7 mi, 
78°
• Wagoner County
48.5 mi, 
275°
• Muskogee County
45.4 mi, 
244°
• Crawford County
31.9 mi, 
133°
• Cherokee County
19.4 mi, 
271°
• Sequoyah County
27.9 mi, 
191°
• Delaware County
35.3 mi, 
345°
• Mayes County
43 mi, 
310°
• Franklin County
50.6 mi, 
122°
[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
*Cherokee Nation Oklahoma Notes
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