Last official estimated population of Sauk County was 62,019 (year 2014)[1]. This was 0.019% of total US population and 1.1% of total Wisconsin state population. Area of Sauk County is 848.4 mi² (=2197.3 km²), in this year population density was 73.10 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Sauk County population in 2026 would be 62,148 [0].
Historical population of Sauk 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] +45.61 %/yr
[1850-1860] +15.81 %/yr
[1860-1870] +2.32 %/yr
[1870-1880] +1.87 %/yr
[1880-1890] +0.62 %/yr
[1890-1900] +0.77 %/yr
[1900-1910] -0.04 %/yr
[1910-1920] -0.1 %/yr
[1920-1930] -0.16 %/yr
[1930-1940] +0.51 %/yr
[1940-1950] +1.24 %/yr
[1950-1960] -0.52 %/yr
[1960-1970] +0.77 %/yr
[1970-1980] +1.08 %/yr
[1980-1990] +0.78 %/yr
[1990-2000] +1.62 %/yr
[2000-2005] +1.3 %/yr
[2005-2010] +1.04 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Sauk County? Visit this page: Settlements in Sauk County, WI
Population of Sauk County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1972 | 1848 | 3,820 |
| 5 to 9 | 2117 | 1964 | 4,081 |
| 10 to 14 | 2120 | 1995 | 4,115 |
| 15 to 19 | 1999 | 1895 | 3,894 |
| 20 to 24 | 1738 | 1712 | 3,450 |
| 25 to 29 | 1859 | 1798 | 3,657 |
| 30 to 34 | 2127 | 1957 | 4,084 |
| 35 to 39 | 1886 | 1797 | 3,683 |
| 40 to 44 | 2025 | 1979 | 4,004 |
| 45 to 49 | 2109 | 2061 | 4,170 |
| 50 to 54 | 2369 | 2453 | 4,822 |
| 55 to 59 | 2337 | 2312 | 4,649 |
| 60 to 64 | 2076 | 2093 | 4,169 |
| 65 to 69 | 1682 | 1796 | 3,478 |
| 70 to 74 | 1167 | 1310 | 2,477 |
| 75 to 79 | 832 | 986 | 1,818 |
| 80 to 84 | 559 | 785 | 1,344 |
| 85+ | 525 | 1139 | 1,664 |
Sauk 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 | 30576 | 30861 | 61,437 |
| WA | 30208 | 30488 | 60,696 |
| NH | 29898 | 30406 | 60,304 |
| NHWAC | 29135 | 29547 | 58,682 |
| NHWA | 28802 | 29210 | 58,012 |
| H | 1601 | 1474 | 3,075 |
| HWAC | 1441 | 1314 | 2,755 |
| HWA | 1406 | 1278 | 2,684 |
| IAC | 572 | 649 | 1,221 |
| NHIAC | 459 | 523 | 982 |
| IA | 413 | 490 | 903 |
| BAC | 458 | 380 | 838 |
| TOM | 385 | 385 | 770 |
| NHBAC | 411 | 322 | 733 |
| NHIA | 323 | 385 | 708 |
| NHTOM | 347 | 349 | 696 |
| AAC | 279 | 379 | 658 |
| NHAAC | 241 | 364 | 605 |
| BA | 291 | 216 | 507 |
| AA | 194 | 293 | 487 |
| NHAA | 162 | 282 | 444 |
| NHBA | 256 | 172 | 428 |
| HIAC | 113 | 126 | 239 |
| HIA | 90 | 105 | 195 |
| HBAC | 47 | 58 | 105 |
| HBA | 35 | 44 | 79 |
| HTOM | 38 | 36 | 74 |
| HAAC | 38 | 15 | 53 |
| HAA | 32 | 11 | 43 |
| NAC | 21 | 19 | 40 |
| NHNAC | 20 | 19 | 39 |
| NA | 8 | 8 | 16 |
| NHNA | 8 | 8 | 16 |
| HNAC | 1 | 0 | 1 |
| HNA | 0 | 0 | 0 |
• Dane County population
36.3 mi,
133°
• Columbia County
30.9 mi,
84°
• Monroe County
49.2 mi,
316°
• Vernon County
45.6 mi,
285°
• Juneau County
35.9 mi,
346°
• Iowa County
31 mi,
198°
• Adams County
38.7 mi,
13°
• Richland County
25 mi,
261°
• Crawford County
52.1 mi,
256°
• Marquette County
38.3 mi,
44°
[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
*Crawford Wisconsin Notes
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