Last official estimated population of Marquette County was 15,390 (year 2014)[1]. This was 0.005% of total US population and 0.3% of total Wisconsin state population. Area of Marquette County is 464.5 mi² (=1203 km²), in this year population density was 33.13 p/mi². If population growth rate would be same as in period 2010-2014 (-0.02%/yr), Marquette County population in 2026 would be 15,348 [0].
Historical population of Marquette 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] +85.41 %/yr
[1850-1860] -0.48 %/yr
[1860-1870] -0.22 %/yr
[1870-1880] +1.01 %/yr
[1880-1890] +0.83 %/yr
[1890-1900] +0.83 %/yr
[1900-1910] +0.22 %/yr
[1910-1920] -0.28 %/yr
[1920-1930] -1.06 %/yr
[1930-1940] -0.31 %/yr
[1940-1950] -0.29 %/yr
[1950-1960] -0.37 %/yr
[1960-1970] +0.4 %/yr
[1970-1980] +2.79 %/yr
[1980-1990] +0.54 %/yr
[1990-2000] +1.67 %/yr
[2000-2005] +1.14 %/yr
[2005-2010] +0.02 %/yr
[2010-2014] -0.02 %/yr
Looking for settlements in Marquette County? Visit this page: Settlements in Marquette County, WI
Population of Marquette County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 411 | 334 | 745 |
| 5 to 9 | 422 | 396 | 818 |
| 10 to 14 | 448 | 388 | 836 |
| 15 to 19 | 431 | 387 | 818 |
| 20 to 24 | 308 | 316 | 624 |
| 25 to 29 | 341 | 335 | 676 |
| 30 to 34 | 386 | 333 | 719 |
| 35 to 39 | 352 | 353 | 705 |
| 40 to 44 | 394 | 399 | 793 |
| 45 to 49 | 522 | 456 | 978 |
| 50 to 54 | 681 | 669 | 1,350 |
| 55 to 59 | 701 | 622 | 1,323 |
| 60 to 64 | 658 | 601 | 1,259 |
| 65 to 69 | 509 | 574 | 1,083 |
| 70 to 74 | 432 | 431 | 863 |
| 75 to 79 | 295 | 359 | 654 |
| 80 to 84 | 188 | 206 | 394 |
| 85+ | 160 | 252 | 412 |
Marquette 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 | 7503 | 7267 | 14,770 |
| WA | 7423 | 7189 | 14,612 |
| NH | 7396 | 7214 | 14,610 |
| NHWAC | 7270 | 7081 | 14,351 |
| NHWA | 7198 | 7015 | 14,213 |
| H | 243 | 197 | 440 |
| HWAC | 233 | 186 | 419 |
| HWA | 225 | 174 | 399 |
| IAC | 80 | 100 | 180 |
| TOM | 85 | 81 | 166 |
| NHIAC | 73 | 83 | 156 |
| NHTOM | 77 | 68 | 145 |
| BAC | 85 | 56 | 141 |
| NHBAC | 75 | 51 | 126 |
| AAC | 57 | 64 | 121 |
| NHAAC | 55 | 63 | 118 |
| IA | 42 | 62 | 104 |
| AA | 41 | 52 | 93 |
| NHAA | 39 | 52 | 91 |
| NHIA | 38 | 52 | 90 |
| BA | 48 | 26 | 74 |
| NHBA | 44 | 26 | 70 |
| HIAC | 7 | 17 | 24 |
| HTOM | 8 | 13 | 21 |
| HBAC | 10 | 5 | 15 |
| HIA | 4 | 10 | 14 |
| NAC | 4 | 5 | 9 |
| NHNAC | 4 | 4 | 8 |
| HBA | 4 | 0 | 4 |
| HAAC | 2 | 1 | 3 |
| HAA | 2 | 0 | 2 |
| HNAC | 0 | 1 | 1 |
| NHNA | 0 | 1 | 1 |
| NA | 0 | 1 | 1 |
| HNA | 0 | 0 | 0 |
• Winnebago County population
41 mi,
64°
• Fond du Lac County
45.9 mi,
96°
• Dodge County
44.9 mi,
128°
• Portage County
45.1 mi,
354°
• Sauk County
38.3 mi,
224°
• Columbia County
24.8 mi,
170°
• Juneau County
35.9 mi,
281°
• Waushara County
21.5 mi,
23°
• Adams County
20.5 mi,
299°
• Green Lake County
21.5 mi,
101°
[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
*Brown; Crawford Wisconsin Notes
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