Last official estimated population of Buffalo County was 13,548 (year 2014)[1]. This was 0.004% of total US population and 0.2% of total Wisconsin state population. Area of Buffalo County is 709.6 mi² (=1837.8 km²), in this year population density was 19.09 p/mi². If population growth rate would be same as in period 2010-2014 (-0.07%/yr), Buffalo County population in 2026 would be 13,432 [0].
Historical population of Buffalo County for period 1860-2014 [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
[1860-1870] +11.15 %/yr
[1870-1880] +3.39 %/yr
[1880-1890] +0.3 %/yr
[1890-1900] +0.47 %/yr
[1900-1910] -0.46 %/yr
[1910-1920] -0.25 %/yr
[1920-1930] -0.18 %/yr
[1930-1940] +0.49 %/yr
[1940-1950] -0.89 %/yr
[1950-1960] -0.36 %/yr
[1960-1970] -0.33 %/yr
[1970-1980] +0.4 %/yr
[1980-1990] -0.52 %/yr
[1990-2000] +0.16 %/yr
[2000-2005] +0.25 %/yr
[2005-2010] -0.55 %/yr
[2010-2014] -0.07 %/yr
Looking for settlements in Buffalo County? Visit this page: Settlements in Buffalo County, WI
Population of Buffalo County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 325 | 364 | 689 |
| 5 to 9 | 387 | 408 | 795 |
| 10 to 14 | 383 | 411 | 794 |
| 15 to 19 | 414 | 363 | 777 |
| 20 to 24 | 341 | 332 | 673 |
| 25 to 29 | 358 | 305 | 663 |
| 30 to 34 | 360 | 353 | 713 |
| 35 to 39 | 331 | 330 | 661 |
| 40 to 44 | 362 | 381 | 743 |
| 45 to 49 | 488 | 419 | 907 |
| 50 to 54 | 550 | 530 | 1,080 |
| 55 to 59 | 540 | 531 | 1,071 |
| 60 to 64 | 538 | 441 | 979 |
| 65 to 69 | 452 | 383 | 835 |
| 70 to 74 | 310 | 304 | 614 |
| 75 to 79 | 238 | 272 | 510 |
| 80 to 84 | 169 | 176 | 345 |
| 85+ | 136 | 203 | 339 |
Buffalo 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 | 6600 | 6432 | 13,032 |
| NH | 6524 | 6409 | 12,933 |
| WA | 6529 | 6382 | 12,911 |
| NHWAC | 6454 | 6342 | 12,796 |
| NHWA | 6402 | 6300 | 12,702 |
| H | 158 | 97 | 255 |
| HWAC | 146 | 90 | 236 |
| HWA | 127 | 82 | 209 |
| TOM | 72 | 60 | 132 |
| BAC | 65 | 48 | 113 |
| IAC | 58 | 50 | 108 |
| NHTOM | 53 | 51 | 104 |
| NHBAC | 53 | 43 | 96 |
| NHIAC | 44 | 41 | 85 |
| AAC | 32 | 34 | 66 |
| BA | 41 | 22 | 63 |
| NHAAC | 27 | 32 | 59 |
| NHBA | 36 | 21 | 57 |
| IA | 29 | 22 | 51 |
| NHIA | 23 | 18 | 41 |
| AA | 11 | 20 | 31 |
| NHAA | 10 | 19 | 29 |
| HTOM | 19 | 9 | 28 |
| HIAC | 14 | 9 | 23 |
| HBAC | 12 | 5 | 17 |
| HIA | 6 | 4 | 10 |
| NAC | 4 | 4 | 8 |
| NHNAC | 4 | 4 | 8 |
| HAAC | 5 | 2 | 7 |
| HBA | 5 | 1 | 6 |
| HAA | 1 | 1 | 2 |
| HNAC | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Olmsted County population
41.5 mi, 
230°
• La Crosse County
46.1 mi, 
135°
• Eau Claire County
33.2 mi, 
44°
• Winona County
27.9 mi, 
181°
• Goodhue County
47.2 mi, 
271°
• Dunn County
39.4 mi, 
350°
• Pierce County
40.3 mi, 
305°
• Trempealeau County
20.7 mi, 
106°
• Wabasha County
24.3 mi, 
254°
• Pepin County
17.1 mi, 347°
[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, Chippewa Wisconsin Notes
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