Last official estimated population of Mills County was 15,074 (year 2014)[1]. This was 0.005% of total US population and 0.5% of total Iowa state population. Area of Mills County is 440.6 mi² (=1141.3 km²), in this year population density was 34.21 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Mills County population in 2026 would be 15,119 [0].
Historical population of Mills 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] +6.88 %/yr
[1870-1880] +4.95 %/yr
[1880-1890] +0.29 %/yr
[1890-1900] +1.43 %/yr
[1900-1910] -0.58 %/yr
[1910-1920] -0.25 %/yr
[1920-1930] +0.28 %/yr
[1930-1940] -0.52 %/yr
[1940-1950] -0.68 %/yr
[1950-1960] -0.75 %/yr
[1960-1970] -1.17 %/yr
[1970-1980] +1.45 %/yr
[1980-1990] -0.15 %/yr
[1990-2000] +0.97 %/yr
[2000-2005] +0.49 %/yr
[2005-2010] +0.21 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Mills County? Visit this page: Settlements in Mills County, IA
Population of Mills County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 411 | 434 | 845 |
| 5 to 9 | 504 | 502 | 1,006 |
| 10 to 14 | 538 | 503 | 1,041 |
| 15 to 19 | 551 | 510 | 1,061 |
| 20 to 24 | 352 | 324 | 676 |
| 25 to 29 | 329 | 301 | 630 |
| 30 to 34 | 405 | 386 | 791 |
| 35 to 39 | 419 | 432 | 851 |
| 40 to 44 | 503 | 490 | 993 |
| 45 to 49 | 496 | 502 | 998 |
| 50 to 54 | 609 | 613 | 1,222 |
| 55 to 59 | 627 | 614 | 1,241 |
| 60 to 64 | 572 | 560 | 1,132 |
| 65 to 69 | 444 | 447 | 891 |
| 70 to 74 | 277 | 243 | 520 |
| 75 to 79 | 181 | 212 | 393 |
| 80 to 84 | 124 | 146 | 270 |
| 85+ | 88 | 182 | 270 |
Mills 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 | 7293 | 7251 | 14,544 |
| NH | 7240 | 7200 | 14,440 |
| WA | 7203 | 7163 | 14,366 |
| NHWAC | 7115 | 7064 | 14,179 |
| NHWA | 7034 | 6977 | 14,011 |
| H | 190 | 201 | 391 |
| HWAC | 178 | 187 | 365 |
| HWA | 169 | 186 | 355 |
| TOM | 95 | 91 | 186 |
| NHTOM | 86 | 90 | 176 |
| BAC | 96 | 63 | 159 |
| IAC | 88 | 70 | 158 |
| NHBAC | 90 | 61 | 151 |
| AAC | 40 | 100 | 140 |
| NHAAC | 40 | 100 | 140 |
| NHIAC | 73 | 57 | 130 |
| AA | 25 | 79 | 104 |
| NHAA | 25 | 79 | 104 |
| BA | 59 | 29 | 88 |
| NHBA | 57 | 28 | 85 |
| IA | 41 | 33 | 74 |
| NHIA | 31 | 20 | 51 |
| HIAC | 15 | 13 | 28 |
| HIA | 10 | 13 | 23 |
| NAC | 11 | 11 | 22 |
| NHNAC | 11 | 11 | 22 |
| NA | 7 | 6 | 13 |
| NHNA | 7 | 6 | 13 |
| HTOM | 9 | 1 | 10 |
| HBAC | 6 | 2 | 8 |
| HBA | 2 | 1 | 3 |
| HNAC | 0 | 0 | 0 |
| HAAC | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
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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
*Pottawattamie Iowa Notes
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