Last official estimated population of Columbia County was 56,888 (year 2014)[1]. This was 0.018% of total US population and 1% of total Wisconsin state population. Area of Columbia County is 796.0 mi² (=2061.6 km²), in this year population density was 71.47 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Columbia County population in 2026 would be 57,053 [0].
Historical population of Columbia County for period 1850-2014 [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
[1850-1860] +9.84 %/yr
[1860-1870] +1.66 %/yr
[1870-1880] -0.26 %/yr
[1880-1890] +0.1 %/yr
[1890-1900] +0.94 %/yr
[1900-1910] +0 %/yr
[1910-1920] -0.21 %/yr
[1920-1930] +0.01 %/yr
[1930-1940] +0.64 %/yr
[1940-1950] +0.45 %/yr
[1950-1960] +0.76 %/yr
[1960-1970] +0.9 %/yr
[1970-1980] +0.74 %/yr
[1980-1990] +0.42 %/yr
[1990-2000] +1.54 %/yr
[2000-2005] +1.08 %/yr
[2005-2010] +0.51 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Columbia County? Visit this page: Settlements in Columbia County, WI
Population of Columbia County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1461 | 1612 | 3,073 |
| 5 to 9 | 1794 | 1721 | 3,515 |
| 10 to 14 | 1879 | 1860 | 3,739 |
| 15 to 19 | 1843 | 1682 | 3,525 |
| 20 to 24 | 1567 | 1347 | 2,914 |
| 25 to 29 | 1644 | 1412 | 3,056 |
| 30 to 34 | 1842 | 1656 | 3,498 |
| 35 to 39 | 1847 | 1693 | 3,540 |
| 40 to 44 | 1944 | 1738 | 3,682 |
| 45 to 49 | 2169 | 1952 | 4,121 |
| 50 to 54 | 2316 | 2246 | 4,562 |
| 55 to 59 | 2251 | 2155 | 4,406 |
| 60 to 64 | 1974 | 1860 | 3,834 |
| 65 to 69 | 1533 | 1528 | 3,061 |
| 70 to 74 | 1066 | 1107 | 2,173 |
| 75 to 79 | 711 | 849 | 1,560 |
| 80 to 84 | 501 | 661 | 1,162 |
| 85+ | 409 | 785 | 1,194 |
Columbia 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 | 27725 | 27263 | 54,988 |
| NH | 27804 | 27142 | 54,946 |
| WA | 27405 | 26964 | 54,369 |
| NHWAC | 26872 | 26602 | 53,474 |
| NHWA | 26604 | 26331 | 52,935 |
| H | 947 | 722 | 1,669 |
| HWAC | 853 | 661 | 1,514 |
| HWA | 801 | 633 | 1,434 |
| BAC | 768 | 327 | 1,095 |
| NHBAC | 714 | 300 | 1,014 |
| BA | 640 | 190 | 830 |
| NHBA | 604 | 175 | 779 |
| TOM | 335 | 318 | 653 |
| IAC | 331 | 291 | 622 |
| NHTOM | 282 | 287 | 569 |
| AAC | 231 | 286 | 517 |
| NHAAC | 222 | 277 | 499 |
| NHIAC | 252 | 237 | 489 |
| IA | 206 | 170 | 376 |
| AA | 145 | 205 | 350 |
| NHAA | 141 | 202 | 343 |
| NHIA | 158 | 134 | 292 |
| HIAC | 79 | 54 | 133 |
| HTOM | 53 | 31 | 84 |
| HIA | 48 | 36 | 84 |
| HBAC | 54 | 27 | 81 |
| NAC | 38 | 29 | 67 |
| NHNAC | 31 | 23 | 54 |
| HBA | 36 | 15 | 51 |
| NA | 20 | 17 | 37 |
| NHNA | 15 | 13 | 28 |
| HAAC | 9 | 9 | 18 |
| HNAC | 7 | 6 | 13 |
| HNA | 5 | 4 | 9 |
| HAA | 4 | 3 | 7 |
• Dane County population
28.3 mi, 
188°
• Fond du Lac County
46.2 mi, 
64°
• Dodge County
31.6 mi, 
96°
• Jefferson County
42.3 mi, 
138°
• Sauk County
30.9 mi, 
264°
• Juneau County
50.5 mi, 
309°
• Waushara County
44.5 mi, 
5°
• Adams County
41 mi, 
327°
• Green Lake County
26.4 mi, 
40°
• Marquette County
24.8 mi, 
350°
[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
*Portage, Brown Wisconsin Notes
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