Last official estimated population of Lyon County was 25,856 (year 2014)[1]. This was 0.008% of total US population and 0.5% of total Minnesota state population. Area of Lyon County is 721.7 mi² (=1869.1 km²), in this year population density was 35.83 p/mi². If population growth rate would be same as in period 2010-2014 (-0%/yr), Lyon County population in 2026 would be 25,853 [0].
Historical population of Lyon County for period 1880-2014 [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

[1880-1890] +4.27 %/yr
[1890-1900] +4.38 %/yr
[1900-1910] +0.75 %/yr
[1910-1920] +1.82 %/yr
[1920-1930] +0.26 %/yr
[1930-1940] +1.1 %/yr
[1940-1950] +0.31 %/yr
[1950-1960] +0.18 %/yr
[1960-1970] +0.69 %/yr
[1970-1980] +0.38 %/yr
[1980-1990] -0.17 %/yr
[1990-2000] +0.26 %/yr
[2000-2005] -0.2 %/yr
[2005-2010] +0.53 %/yr
[2010-2014] -0 %/yr
Looking for settlements in Lyon County? Visit this page: Settlements in Lyon County, MN
Population of Lyon County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 948 | 892 | 1,840 |
| 5 to 9 | 917 | 875 | 1,792 |
| 10 to 14 | 831 | 863 | 1,694 |
| 15 to 19 | 991 | 977 | 1,968 |
| 20 to 24 | 905 | 941 | 1,846 |
| 25 to 29 | 950 | 874 | 1,824 |
| 30 to 34 | 878 | 857 | 1,735 |
| 35 to 39 | 821 | 698 | 1,519 |
| 40 to 44 | 712 | 687 | 1,399 |
| 45 to 49 | 708 | 697 | 1,405 |
| 50 to 54 | 882 | 854 | 1,736 |
| 55 to 59 | 850 | 928 | 1,778 |
| 60 to 64 | 728 | 700 | 1,428 |
| 65 to 69 | 512 | 530 | 1,042 |
| 70 to 74 | 384 | 406 | 790 |
| 75 to 79 | 282 | 328 | 610 |
| 80 to 84 | 199 | 342 | 541 |
| 85+ | 236 | 482 | 718 |
Lyon 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 | 11922 | 12096 | 24,018 |
| WAC | 11795 | 12166 | 23,961 |
| WA | 11619 | 12002 | 23,621 |
| NHWAC | 11063 | 11396 | 22,459 |
| NHWA | 10909 | 11252 | 22,161 |
| H | 812 | 835 | 1,647 |
| HWAC | 732 | 770 | 1,502 |
| HWA | 710 | 750 | 1,460 |
| AAC | 493 | 442 | 935 |
| NHAAC | 473 | 422 | 895 |
| AA | 438 | 403 | 841 |
| BAC | 476 | 353 | 829 |
| NHAA | 423 | 388 | 811 |
| NHBAC | 455 | 330 | 785 |
| BA | 383 | 263 | 646 |
| NHBA | 368 | 246 | 614 |
| TOM | 197 | 177 | 374 |
| NHTOM | 175 | 156 | 331 |
| IAC | 164 | 138 | 302 |
| NHIAC | 101 | 97 | 198 |
| IA | 91 | 81 | 172 |
| HIAC | 63 | 41 | 104 |
| NHIA | 43 | 51 | 94 |
| HIA | 48 | 30 | 78 |
| HBAC | 21 | 23 | 44 |
| HTOM | 22 | 21 | 43 |
| HAAC | 20 | 20 | 40 |
| HBA | 15 | 17 | 32 |
| NAC | 16 | 14 | 30 |
| HAA | 15 | 15 | 30 |
| NHNAC | 14 | 12 | 26 |
| NA | 6 | 5 | 11 |
| NHNA | 4 | 3 | 7 |
| HNAC | 2 | 2 | 4 |
| HNA | 2 | 2 | 4 |
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[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
*Redwood Minnesota Notes
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