Last official estimated population of Polk County was 20,679 (year 2014)[1]. This was 0.006% of total US population and 0.7% of total Arkansas state population. Area of Polk County is 862.5 mi² (=2233.8 km²), in this year population density was 23.98 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Polk County population in 2026 would be 20,730 [0].
Historical population of Polk County for period 1850-2014 [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
[1850-1860] +12.93 %/yr
[1860-1870] -2.3 %/yr
[1870-1880] +5.66 %/yr
[1880-1890] +4.71 %/yr
[1890-1900] +7.05 %/yr
[1900-1910] -0.64 %/yr
[1910-1920] -0.48 %/yr
[1920-1930] -0.99 %/yr
[1930-1940] +0.64 %/yr
[1940-1950] -1.09 %/yr
[1950-1960] -1.67 %/yr
[1960-1970] +1.05 %/yr
[1970-1980] +2.49 %/yr
[1980-1990] +0.2 %/yr
[1990-2000] +1.55 %/yr
[2000-2005] -0.03 %/yr
[2005-2010] +0.45 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Polk County? Visit this page: Settlements in Polk County, AR
Population of Polk County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 609 | 592 | 1,201 |
| 5 to 9 | 663 | 632 | 1,295 |
| 10 to 14 | 688 | 692 | 1,380 |
| 15 to 19 | 688 | 582 | 1,270 |
| 20 to 24 | 545 | 565 | 1,110 |
| 25 to 29 | 499 | 451 | 950 |
| 30 to 34 | 506 | 520 | 1,026 |
| 35 to 39 | 510 | 509 | 1,019 |
| 40 to 44 | 530 | 596 | 1,126 |
| 45 to 49 | 604 | 575 | 1,179 |
| 50 to 54 | 688 | 736 | 1,424 |
| 55 to 59 | 672 | 720 | 1,392 |
| 60 to 64 | 697 | 763 | 1,460 |
| 65 to 69 | 688 | 735 | 1,423 |
| 70 to 74 | 574 | 607 | 1,181 |
| 75 to 79 | 390 | 432 | 822 |
| 80 to 84 | 259 | 253 | 512 |
| 85+ | 142 | 313 | 455 |
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 | 9618 | 9948 | 19,566 |
| WA | 9373 | 9734 | 19,107 |
| NH | 9286 | 9651 | 18,937 |
| NHWAC | 8989 | 9365 | 18,354 |
| NHWA | 8759 | 9162 | 17,921 |
| H | 666 | 622 | 1,288 |
| HWAC | 629 | 583 | 1,212 |
| HWA | 614 | 572 | 1,186 |
| IAC | 395 | 372 | 767 |
| NHIAC | 363 | 346 | 709 |
| TOM | 257 | 226 | 483 |
| NHTOM | 242 | 213 | 455 |
| IA | 200 | 196 | 396 |
| NHIA | 178 | 175 | 353 |
| BAC | 108 | 81 | 189 |
| AAC | 75 | 92 | 167 |
| NHAAC | 70 | 89 | 159 |
| NHBAC | 94 | 59 | 153 |
| AA | 56 | 68 | 124 |
| NHAA | 51 | 66 | 117 |
| BA | 57 | 48 | 105 |
| NHBA | 48 | 34 | 82 |
| HIAC | 32 | 26 | 58 |
| HIA | 22 | 21 | 43 |
| HBAC | 14 | 22 | 36 |
| HTOM | 15 | 13 | 28 |
| HBA | 9 | 14 | 23 |
| NAC | 15 | 6 | 21 |
| NHNAC | 13 | 5 | 18 |
| NA | 9 | 1 | 10 |
| NHNA | 8 | 1 | 9 |
| HAAC | 5 | 3 | 8 |
| HAA | 5 | 2 | 7 |
| HNAC | 2 | 1 | 3 |
| HNA | 1 | 0 | 1 |
• Sebastian County population
48.8 mi, 
357°
• Le Flore County
38.5 mi, 
316°
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40 mi, 
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• Logan County
58 mi, 
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• Sevier County
34.3 mi, 
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• Howard County
31.3 mi, 
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• Little River County
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• Pike County
39.9 mi, 
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• Scott County
27.1 mi, 
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• Montgomery County
32.5 mi, 
83°
[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
*Sevier Arkansas Notes
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