Last official estimated population of Jo Daviess County was 22,660 (year 2014)[1]. This was 0.007% of total US population and 0.2% of total Illinois state population. Area of Jo Daviess County is 618.6 mi² (=1602.1 km²), in this year population density was 36.63 p/mi². If population growth rate would be same as in period 2010-2014 (-0.02%/yr), Jo Daviess County population in 2026 would be 22,606 [0].
Historical population of Jo Daviess County for period 1830-2014 [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
[1830-1840] +11.34 %/yr
[1840-1850] +11.65 %/yr
[1850-1860] +3.92 %/yr
[1860-1870] +0.18 %/yr
[1870-1880] -0.11 %/yr
[1880-1890] -0.92 %/yr
[1890-1900] -0.23 %/yr
[1900-1910] -0.79 %/yr
[1910-1920] -0.33 %/yr
[1920-1930] -0.8 %/yr
[1930-1940] -0.12 %/yr
[1940-1950] +0.71 %/yr
[1950-1960] +0.17 %/yr
[1960-1970] -0.03 %/yr
[1970-1980] +0.78 %/yr
[1980-1990] -0.75 %/yr
[1990-2000] +0.22 %/yr
[2000-2005] +0.34 %/yr
[2005-2010] -0 %/yr
[2010-2014] -0.02 %/yr
Looking for settlements in Jo Daviess County? Visit this page: Settlements in Jo Daviess County, IL
Population of Jo Daviess County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 496 | 467 | 963 |
| 5 to 9 | 645 | 577 | 1,222 |
| 10 to 14 | 689 | 613 | 1,302 |
| 15 to 19 | 667 | 559 | 1,226 |
| 20 to 24 | 548 | 506 | 1,054 |
| 25 to 29 | 520 | 460 | 980 |
| 30 to 34 | 533 | 556 | 1,089 |
| 35 to 39 | 553 | 511 | 1,064 |
| 40 to 44 | 641 | 605 | 1,246 |
| 45 to 49 | 652 | 661 | 1,313 |
| 50 to 54 | 840 | 823 | 1,663 |
| 55 to 59 | 857 | 955 | 1,812 |
| 60 to 64 | 914 | 937 | 1,851 |
| 65 to 69 | 914 | 892 | 1,806 |
| 70 to 74 | 648 | 688 | 1,336 |
| 75 to 79 | 498 | 521 | 1,019 |
| 80 to 84 | 290 | 329 | 619 |
| 85+ | 274 | 415 | 689 |
Jo Daviess 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 | 11005 | 10931 | 21,936 |
| WA | 10902 | 10840 | 21,742 |
| NH | 10799 | 10763 | 21,562 |
| NHWAC | 10656 | 10636 | 21,292 |
| NHWA | 10555 | 10551 | 21,106 |
| H | 380 | 312 | 692 |
| HWAC | 349 | 295 | 644 |
| HWA | 347 | 289 | 636 |
| BAC | 127 | 101 | 228 |
| TOM | 110 | 97 | 207 |
| NHBAC | 112 | 91 | 203 |
| NHTOM | 108 | 91 | 199 |
| AAC | 79 | 76 | 155 |
| NHAAC | 78 | 74 | 152 |
| BA | 73 | 54 | 127 |
| IAC | 68 | 59 | 127 |
| AA | 59 | 59 | 118 |
| NHAA | 58 | 58 | 116 |
| NHBA | 60 | 48 | 108 |
| NHIAC | 54 | 49 | 103 |
| IA | 29 | 22 | 51 |
| NHIA | 15 | 13 | 28 |
| HBAC | 15 | 10 | 25 |
| HIAC | 14 | 10 | 24 |
| HIA | 14 | 9 | 23 |
| HBA | 13 | 6 | 19 |
| NAC | 11 | 5 | 16 |
| NHNAC | 8 | 4 | 12 |
| NA | 6 | 3 | 9 |
| HTOM | 2 | 6 | 8 |
| NHNA | 3 | 2 | 5 |
| HNAC | 3 | 1 | 4 |
| HNA | 3 | 1 | 4 |
| HAAC | 1 | 2 | 3 |
| HAA | 1 | 1 | 2 |
• Dubuque County population
34.7 mi, 
281°
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45 mi, 
159°
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42.8 mi, 
325°
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36.1 mi, 
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• Stephenson County
27.9 mi, 
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• Green County
37.7 mi, 
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• Iowa County
44.3 mi, 
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• Jackson County
23.1 mi, 
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• Lafayette County
20.7 mi, 11°
• Carroll County
24.9 mi, 
143°
[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
*Madison, Bond Illinois Notes
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