Last official estimated population of Polk County was 31,662 (year 2014)[1]. This was 0.01% of total US population and 0.6% of total Minnesota state population. Area of Polk County is 1,997.8 mi² (=5174.2 km²), in this year population density was 15.85 p/mi². If population growth rate would be same as in period 2010-2014 (+0.05%/yr), Polk County population in 2025 would be 31,833 [0].
Historical population of Polk 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
[1860-1880] +21.31 %/yr
[1880-1890] +10.2 %/yr
[1890-1900] +1.61 %/yr
[1900-1910] +0.16 %/yr
[1910-1920] +0.3 %/yr
[1920-1930] -0.29 %/yr
[1930-1940] +0.47 %/yr
[1940-1950] -0.5 %/yr
[1950-1960] +0.08 %/yr
[1960-1970] -0.49 %/yr
[1970-1980] +0.12 %/yr
[1980-1990] -0.67 %/yr
[1990-2000] -0.38 %/yr
[2000-2005] -0.14 %/yr
[2005-2010] +0.29 %/yr
[2010-2014] +0.05 %/yr
Looking for settlements in Polk County? Visit this page: Settlements in Polk County, MN
Population of Polk County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1034 | 1003 | 2,037 |
| 5 to 9 | 1049 | 1039 | 2,088 |
| 10 to 14 | 1018 | 1047 | 2,065 |
| 15 to 19 | 1131 | 1058 | 2,189 |
| 20 to 24 | 1212 | 1047 | 2,259 |
| 25 to 29 | 1043 | 897 | 1,940 |
| 30 to 34 | 983 | 934 | 1,917 |
| 35 to 39 | 846 | 769 | 1,615 |
| 40 to 44 | 879 | 851 | 1,730 |
| 45 to 49 | 947 | 912 | 1,859 |
| 50 to 54 | 1186 | 1143 | 2,329 |
| 55 to 59 | 1182 | 1123 | 2,305 |
| 60 to 64 | 1007 | 955 | 1,962 |
| 65 to 69 | 833 | 757 | 1,590 |
| 70 to 74 | 545 | 638 | 1,183 |
| 75 to 79 | 422 | 536 | 958 |
| 80 to 84 | 323 | 411 | 734 |
| 85+ | 246 | 698 | 944 |
Polk 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 | 15150 | 15183 | 30,333 |
| NH | 14911 | 14932 | 29,843 |
| WA | 14849 | 14865 | 29,714 |
| NHWAC | 14273 | 14368 | 28,641 |
| NHWA | 14014 | 14091 | 28,105 |
| H | 975 | 886 | 1,861 |
| HWAC | 877 | 815 | 1,692 |
| HWA | 835 | 774 | 1,609 |
| IAC | 467 | 449 | 916 |
| NHIAC | 382 | 389 | 771 |
| TOM | 326 | 331 | 657 |
| BAC | 359 | 259 | 618 |
| NHTOM | 280 | 290 | 570 |
| NHBAC | 316 | 222 | 538 |
| IA | 269 | 260 | 529 |
| AAC | 226 | 246 | 472 |
| NHAAC | 214 | 233 | 447 |
| NHIA | 216 | 224 | 440 |
| BA | 265 | 166 | 431 |
| NHBA | 236 | 144 | 380 |
| AA | 172 | 189 | 361 |
| NHAA | 164 | 178 | 342 |
| HIAC | 85 | 60 | 145 |
| HIA | 53 | 36 | 89 |
| HTOM | 46 | 41 | 87 |
| HBAC | 43 | 37 | 80 |
| HBA | 29 | 22 | 51 |
| NAC | 18 | 20 | 38 |
| NHNAC | 13 | 18 | 31 |
| HAAC | 12 | 13 | 25 |
| HAA | 8 | 11 | 19 |
| NA | 5 | 7 | 12 |
| HNAC | 5 | 2 | 7 |
| HNA | 4 | 2 | 6 |
| NHNA | 1 | 5 | 6 |
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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
*Mahkahta; Pembina (Kittson) Minnesota Notes
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