Last official estimated population of Dubuque County was 93,893 (year 2014)[1]. This was 0.029% of total US population and 3% of total Iowa state population. Area of Dubuque County is 616.5 mi² (=1596.6 km²), in this year population density was 152.31 p/mi². If population growth rate would be same as in period 2010-2014 (+0.06%/yr), Dubuque County population in 2024 would be 94,496 [0].
Historical population of Dubuque 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] +13.49 %/yr
[1850-1860] +11.14 %/yr
[1860-1870] +2.26 %/yr
[1870-1880] +0.99 %/yr
[1880-1890] +1.49 %/yr
[1890-1900] +1.24 %/yr
[1900-1910] +0.18 %/yr
[1910-1920] +0.14 %/yr
[1920-1930] +0.5 %/yr
[1930-1940] +0.41 %/yr
[1940-1950] +1.13 %/yr
[1950-1960] +1.16 %/yr
[1960-1970] +1.25 %/yr
[1970-1980] +0.34 %/yr
[1980-1990] -0.81 %/yr
[1990-2000] +0.31 %/yr
[2000-2005] +0.36 %/yr
[2005-2010] +0.63 %/yr
[2010-2014] +0.06 %/yr
Looking for settlements in Dubuque County? Visit this page: Settlements in Dubuque County, IA
Population of Dubuque County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 3011 | 2899 | 5,910 |
| 5 to 9 | 3100 | 3090 | 6,190 |
| 10 to 14 | 3174 | 3148 | 6,322 |
| 15 to 19 | 3483 | 3349 | 6,832 |
| 20 to 24 | 3478 | 3325 | 6,803 |
| 25 to 29 | 3275 | 3031 | 6,306 |
| 30 to 34 | 3159 | 2901 | 6,060 |
| 35 to 39 | 2557 | 2594 | 5,151 |
| 40 to 44 | 2694 | 2581 | 5,275 |
| 45 to 49 | 3030 | 3042 | 6,072 |
| 50 to 54 | 3517 | 3412 | 6,929 |
| 55 to 59 | 3382 | 3439 | 6,821 |
| 60 to 64 | 2978 | 3078 | 6,056 |
| 65 to 69 | 2247 | 2341 | 4,588 |
| 70 to 74 | 1580 | 1925 | 3,505 |
| 75 to 79 | 1309 | 1603 | 2,912 |
| 80 to 84 | 865 | 1307 | 2,172 |
| 85+ | 795 | 1671 | 2,466 |
Dubuque 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 | 46494 | 47733 | 94,227 |
| WAC | 45238 | 46358 | 91,596 |
| WA | 44605 | 45736 | 90,341 |
| NHWAC | 44217 | 45476 | 89,693 |
| NHWA | 43639 | 44884 | 88,523 |
| BAC | 1870 | 1725 | 3,595 |
| NHBAC | 1792 | 1661 | 3,453 |
| BA | 1497 | 1368 | 2,865 |
| NHBA | 1440 | 1319 | 2,759 |
| H | 1140 | 1003 | 2,143 |
| HWAC | 1021 | 882 | 1,903 |
| HWA | 966 | 852 | 1,818 |
| AAC | 755 | 887 | 1,642 |
| NHAAC | 726 | 858 | 1,584 |
| TOM | 666 | 656 | 1,322 |
| AA | 597 | 723 | 1,320 |
| NHAA | 579 | 700 | 1,279 |
| NHTOM | 608 | 623 | 1,231 |
| IAC | 288 | 279 | 567 |
| NHIAC | 224 | 221 | 445 |
| NAC | 188 | 178 | 366 |
| NHNAC | 176 | 170 | 346 |
| NA | 149 | 142 | 291 |
| NHNA | 143 | 137 | 280 |
| IA | 120 | 111 | 231 |
| NHIA | 85 | 70 | 155 |
| HBAC | 78 | 64 | 142 |
| HIAC | 64 | 58 | 122 |
| HBA | 57 | 49 | 106 |
| HTOM | 58 | 33 | 91 |
| HIA | 35 | 41 | 76 |
| HAAC | 29 | 29 | 58 |
| HAA | 18 | 23 | 41 |
| HNAC | 12 | 8 | 20 |
| HNA | 6 | 5 | 11 |
• Linn County population
45.4 mi, 
234°
• Grant County
29.6 mi, 
18°
• Clinton County
42.9 mi, 
155°
• Jo Daviess County
34.7 mi, 
101°
• Buchanan County
48.9 mi, 
270°
• Jones County
26.4 mi, 
207°
• Jackson County
25.9 mi, 
143°
• Clayton County
34.5 mi, 
319°
• Delaware County
24.9 mi, 271°
• Lafayette County
40.3 mi, 
70°
[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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