Last official estimated population of Jones County was 20,685 (year 2014)[1]. This was 0.006% of total US population and 0.7% of total Iowa state population. Area of Jones County is 577.0 mi² (=1494.4 km²), in this year population density was 35.85 p/mi². If population growth rate would be same as in period 2010-2014 (+0.06%/yr), Jones County population in 2026 would be 20,827 [0].
Historical population of Jones County for period 1840-2014 [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
[1840-1850] +20.37 %/yr
[1850-1860] +16.04 %/yr
[1860-1870] +4.02 %/yr
[1870-1880] +0.65 %/yr
[1880-1890] -0.4 %/yr
[1890-1900] +0.82 %/yr
[1900-1910] -1.41 %/yr
[1910-1920] -0.24 %/yr
[1920-1930] +0.32 %/yr
[1930-1940] +0.38 %/yr
[1940-1950] -0.28 %/yr
[1950-1960] +0.65 %/yr
[1960-1970] -0.41 %/yr
[1970-1980] +0.27 %/yr
[1980-1990] -0.48 %/yr
[1990-2000] +0.4 %/yr
[2000-2005] +0.37 %/yr
[2005-2010] +0.03 %/yr
[2010-2014] +0.06 %/yr
Looking for settlements in Jones County? Visit this page: Settlements in Jones County, IA
Population of Jones County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 574 | 499 | 1,073 |
| 5 to 9 | 665 | 628 | 1,293 |
| 10 to 14 | 657 | 668 | 1,325 |
| 15 to 19 | 594 | 565 | 1,159 |
| 20 to 24 | 632 | 498 | 1,130 |
| 25 to 29 | 587 | 457 | 1,044 |
| 30 to 34 | 685 | 551 | 1,236 |
| 35 to 39 | 662 | 543 | 1,205 |
| 40 to 44 | 657 | 551 | 1,208 |
| 45 to 49 | 751 | 616 | 1,367 |
| 50 to 54 | 857 | 788 | 1,645 |
| 55 to 59 | 808 | 741 | 1,549 |
| 60 to 64 | 779 | 648 | 1,427 |
| 65 to 69 | 560 | 569 | 1,129 |
| 70 to 74 | 410 | 435 | 845 |
| 75 to 79 | 321 | 374 | 695 |
| 80 to 84 | 213 | 298 | 511 |
| 85+ | 205 | 408 | 613 |
Jones 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 | 10419 | 9698 | 20,117 |
| WAC | 10127 | 9677 | 19,804 |
| WA | 10065 | 9609 | 19,674 |
| NHWAC | 9939 | 9552 | 19,491 |
| NHWA | 9878 | 9492 | 19,370 |
| BAC | 411 | 116 | 527 |
| NHBAC | 408 | 109 | 517 |
| BA | 375 | 88 | 463 |
| NHBA | 373 | 82 | 455 |
| H | 198 | 139 | 337 |
| HWAC | 188 | 125 | 313 |
| HWA | 187 | 117 | 304 |
| AAC | 78 | 60 | 138 |
| NHAAC | 78 | 60 | 138 |
| TOM | 66 | 69 | 135 |
| NHTOM | 65 | 61 | 126 |
| NHAA | 66 | 47 | 113 |
| AA | 66 | 47 | 113 |
| IAC | 66 | 47 | 113 |
| NHIAC | 58 | 33 | 91 |
| IA | 40 | 19 | 59 |
| NHIA | 33 | 11 | 44 |
| HIAC | 8 | 14 | 22 |
| HIA | 7 | 8 | 15 |
| NAC | 7 | 7 | 14 |
| NHNAC | 6 | 6 | 12 |
| NA | 5 | 5 | 10 |
| HBAC | 3 | 7 | 10 |
| NHNA | 4 | 5 | 9 |
| HTOM | 1 | 8 | 9 |
| HBA | 2 | 6 | 8 |
| HNAC | 1 | 1 | 2 |
| HNA | 1 | 0 | 1 |
| HAAC | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Linn County population
24.9 mi, 
262°
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42 mi, 
142°
• Johnson County
39.8 mi, 
217°
• Dubuque County
26.4 mi, 
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• Clinton County
33.8 mi, 
117°
• Muscatine County
44.3 mi, 
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• Buchanan County
43.9 mi, 
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• Jackson County
27.9 mi, 
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• Cedar County
24.4 mi, 181°
• Delaware County
27.2 mi, 
332°
[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
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