Last official estimated population of Adair County was 7,693 (year 2014)[1]. This was 0.002% of total US population and 0.2% of total Iowa state population. Area of Adair County is 570.3 mi² (=1477 km²), in this year population density was 13.49 p/mi². If population growth rate would be same as in period 2010-2014 (+0.04%/yr), Adair County population in 2026 would be 7,726 [0].
Historical population of Adair County for period 1860-2014 [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
[1860-1870] +15 %/yr
[1870-1880] +11.35 %/yr
[1880-1890] +2.22 %/yr
[1890-1900] +1.09 %/yr
[1900-1910] -1.15 %/yr
[1910-1920] -0.11 %/yr
[1920-1930] -0.26 %/yr
[1930-1940] -0.51 %/yr
[1940-1950] -0.71 %/yr
[1950-1960] -1.2 %/yr
[1960-1970] -1.37 %/yr
[1970-1980] +0.02 %/yr
[1980-1990] -1.22 %/yr
[1990-2000] -0.19 %/yr
[2000-2005] -0.79 %/yr
[2005-2010] -0.64 %/yr
[2010-2014] +0.04 %/yr
Looking for settlements in Adair County? Visit this page: Settlements in Adair County, IA
Population of Adair County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 195 | 163 | 358 |
| 5 to 9 | 244 | 245 | 489 |
| 10 to 14 | 241 | 258 | 499 |
| 15 to 19 | 216 | 230 | 446 |
| 20 to 24 | 210 | 158 | 368 |
| 25 to 29 | 195 | 174 | 369 |
| 30 to 34 | 184 | 195 | 379 |
| 35 to 39 | 186 | 211 | 397 |
| 40 to 44 | 197 | 180 | 377 |
| 45 to 49 | 226 | 221 | 447 |
| 50 to 54 | 300 | 302 | 602 |
| 55 to 59 | 308 | 272 | 580 |
| 60 to 64 | 261 | 234 | 495 |
| 65 to 69 | 209 | 210 | 419 |
| 70 to 74 | 134 | 183 | 317 |
| 75 to 79 | 138 | 170 | 308 |
| 80 to 84 | 97 | 155 | 252 |
| 85+ | 118 | 234 | 352 |
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 |
| WAC | 3618 | 3760 | 7,378 |
| NH | 3593 | 3736 | 7,329 |
| WA | 3591 | 3731 | 7,322 |
| NHWAC | 3556 | 3707 | 7,263 |
| NHWA | 3537 | 3682 | 7,219 |
| H | 66 | 59 | 125 |
| HWAC | 62 | 53 | 115 |
| HWA | 54 | 49 | 103 |
| TOM | 27 | 31 | 58 |
| BAC | 28 | 23 | 51 |
| AAC | 22 | 23 | 45 |
| NHTOM | 19 | 25 | 44 |
| NHBAC | 24 | 18 | 42 |
| NHAAC | 21 | 20 | 41 |
| IAC | 18 | 18 | 36 |
| AA | 18 | 16 | 34 |
| NHAA | 17 | 13 | 30 |
| BA | 14 | 13 | 27 |
| NHIAC | 11 | 15 | 26 |
| NHBA | 13 | 12 | 25 |
| HTOM | 8 | 6 | 14 |
| IA | 8 | 4 | 12 |
| HIAC | 7 | 3 | 10 |
| NHIA | 6 | 4 | 10 |
| HBAC | 4 | 5 | 9 |
| NAC | 1 | 3 | 4 |
| HAAC | 1 | 3 | 4 |
| HAA | 1 | 3 | 4 |
| NHNAC | 1 | 2 | 3 |
| HIA | 2 | 0 | 2 |
| HBA | 1 | 1 | 2 |
| NA | 1 | 0 | 1 |
| NHNA | 1 | 0 | 1 |
| HNAC | 0 | 1 | 1 |
| HNA | 0 | 0 | 0 |
• Dallas County population
33.5 mi, 
42°
• Madison County
24 mi, 
89°
• Cass County
23.6 mi, 
270°
• Union County
24 mi, 
149°
• Guthrie County
24.6 mi, 
357°
• Montgomery County
41.2 mi, 
239°
• Clarke County
41.6 mi, 
119°
• Taylor County
42.4 mi, 
195°
• Audubon County
32.8 mi, 
317°
• Adams County
24.1 mi, 
208°
[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
*Pottawattamie Iowa Notes
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