Last official estimated population of Audubon County was 6,108 (year 2014)[1]. This was 0.002% of total US population and 0.2% of total Iowa state population. Area of Audubon County is 443.4 mi² (=1148.4 km²), in this year population density was 13.78 p/mi². If population growth rate would be same as in period 2010-2014 (-0.04%/yr), Audubon County population in 2024 would be 6,081 [0].
Historical population of Audubon 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] +10.32 %/yr
[1870-1880] +19.91 %/yr
[1880-1890] +5.24 %/yr
[1890-1900] +0.94 %/yr
[1900-1910] -0.72 %/yr
[1910-1920] -0.12 %/yr
[1920-1930] -0.21 %/yr
[1930-1940] -0.39 %/yr
[1940-1950] -0.18 %/yr
[1950-1960] -0.59 %/yr
[1960-1970] -1.28 %/yr
[1970-1980] -1.14 %/yr
[1980-1990] -1.53 %/yr
[1990-2000] -0.72 %/yr
[2000-2005] -1.52 %/yr
[2005-2010] -0.66 %/yr
[2010-2014] -0.04 %/yr
Looking for settlements in Audubon County? Visit this page: Settlements in Audubon County, IA
Population of Audubon County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 138 | 127 | 265 |
| 5 to 9 | 165 | 169 | 334 |
| 10 to 14 | 171 | 153 | 324 |
| 15 to 19 | 179 | 188 | 367 |
| 20 to 24 | 135 | 149 | 284 |
| 25 to 29 | 111 | 122 | 233 |
| 30 to 34 | 144 | 135 | 279 |
| 35 to 39 | 148 | 123 | 271 |
| 40 to 44 | 123 | 159 | 282 |
| 45 to 49 | 182 | 173 | 355 |
| 50 to 54 | 252 | 252 | 504 |
| 55 to 59 | 252 | 245 | 497 |
| 60 to 64 | 216 | 175 | 391 |
| 65 to 69 | 163 | 182 | 345 |
| 70 to 74 | 143 | 159 | 302 |
| 75 to 79 | 124 | 145 | 269 |
| 80 to 84 | 77 | 122 | 199 |
| 85+ | 81 | 212 | 293 |
Audubon 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 | 2779 | 2954 | 5,733 |
| WAC | 2767 | 2960 | 5,727 |
| WA | 2747 | 2940 | 5,687 |
| NHWAC | 2746 | 2929 | 5,675 |
| NHWA | 2726 | 2912 | 5,638 |
| H | 25 | 36 | 61 |
| HWAC | 21 | 31 | 52 |
| HWA | 21 | 28 | 49 |
| BAC | 21 | 26 | 47 |
| TOM | 21 | 22 | 43 |
| NHTOM | 21 | 19 | 40 |
| AAC | 24 | 14 | 38 |
| NHAAC | 24 | 13 | 37 |
| NHBAC | 18 | 19 | 37 |
| NHAA | 20 | 11 | 31 |
| AA | 20 | 11 | 31 |
| IAC | 11 | 13 | 24 |
| BA | 12 | 10 | 22 |
| NHIAC | 10 | 11 | 21 |
| NHBA | 9 | 6 | 15 |
| IA | 4 | 6 | 10 |
| HBAC | 3 | 7 | 10 |
| NHIA | 3 | 5 | 8 |
| HBA | 3 | 4 | 7 |
| NAC | 2 | 2 | 4 |
| NHNAC | 2 | 2 | 4 |
| HIAC | 1 | 2 | 3 |
| HTOM | 0 | 3 | 3 |
| HIA | 1 | 1 | 2 |
| NHNA | 0 | 1 | 1 |
| HAAC | 0 | 1 | 1 |
| NA | 0 | 1 | 1 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Pottawattamie County population
40.6 mi, 
234°
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44.6 mi, 
89°
• Carroll County
25 mi, 
4°
• Crawford County
35.4 mi, 
315°
• Cass County
23.9 mi, 
183°
• Shelby County
20.9 mi, 
269°
• Guthrie County
20.8 mi, 89°
• Greene County
36.5 mi, 
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• Adair County
32.8 mi, 
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• Adams County
46.7 mi, 
166°
[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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