Last official estimated population of Alleghany County was 16,223 (year 2014)[1]. This was 0.005% of total US population and 0.2% of total Virginia state population. Area of Alleghany County is 448.7 mi² (=1162.2 km²), in this year population density was 36.15 p/mi². If population growth rate would be same as in period 2010-2014 (-0.04%/yr), Alleghany County population in 2024 would be 16,156 [0].
Historical population of Alleghany County for period 1830-2014 [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
[1830-1840] -0.24 %/yr
[1840-1850] +2.49 %/yr
[1850-1860] +6.77 %/yr
[1860-1870] -5.92 %/yr
[1870-1880] +4.28 %/yr
[1880-1890] +5.21 %/yr
[1890-1900] +5.81 %/yr
[1900-1910] -1.41 %/yr
[1910-1920] +0.79 %/yr
[1920-1930] +2.79 %/yr
[1930-1940] +1.17 %/yr
[1940-1950] +0.2 %/yr
[1950-1960] -6.26 %/yr
[1960-1970] +0.27 %/yr
[1970-1980] +1.41 %/yr
[1980-1990] -1.11 %/yr
[1990-2000] +3.01 %/yr
[2000-2005] -0.77 %/yr
[2005-2010] -0.4 %/yr
[2010-2014] -0.04 %/yr
Looking for settlements in Alleghany County? Visit this page: Settlements in Alleghany County, VA
Population of Alleghany County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 373 | 311 | 684 |
| 5 to 9 | 423 | 351 | 774 |
| 10 to 14 | 462 | 454 | 916 |
| 15 to 19 | 524 | 457 | 981 |
| 20 to 24 | 435 | 423 | 858 |
| 25 to 29 | 344 | 344 | 688 |
| 30 to 34 | 345 | 376 | 721 |
| 35 to 39 | 381 | 354 | 735 |
| 40 to 44 | 466 | 515 | 981 |
| 45 to 49 | 543 | 528 | 1,071 |
| 50 to 54 | 571 | 617 | 1,188 |
| 55 to 59 | 599 | 651 | 1,250 |
| 60 to 64 | 575 | 550 | 1,125 |
| 65 to 69 | 590 | 619 | 1,209 |
| 70 to 74 | 503 | 541 | 1,044 |
| 75 to 79 | 338 | 364 | 702 |
| 80 to 84 | 182 | 269 | 451 |
| 85+ | 130 | 312 | 442 |
Alleghany 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 | 7669 | 7933 | 15,602 |
| WAC | 7323 | 7608 | 14,931 |
| NHWAC | 7219 | 7520 | 14,739 |
| WA | 7191 | 7507 | 14,698 |
| NHWA | 7091 | 7425 | 14,516 |
| BAC | 466 | 442 | 908 |
| NHBAC | 455 | 429 | 884 |
| BA | 380 | 372 | 752 |
| NHBA | 371 | 363 | 734 |
| TOM | 134 | 106 | 240 |
| NHTOM | 130 | 98 | 228 |
| H | 115 | 103 | 218 |
| HWAC | 104 | 88 | 192 |
| HWA | 100 | 82 | 182 |
| AAC | 72 | 39 | 111 |
| NHAAC | 72 | 37 | 109 |
| IAC | 55 | 44 | 99 |
| NHIAC | 51 | 38 | 89 |
| AA | 56 | 26 | 82 |
| NHAA | 56 | 25 | 81 |
| IA | 17 | 18 | 35 |
| NHIA | 15 | 16 | 31 |
| HBAC | 11 | 13 | 24 |
| HBA | 9 | 9 | 18 |
| NAC | 7 | 11 | 18 |
| NHNAC | 7 | 9 | 16 |
| NA | 6 | 7 | 13 |
| NHNA | 6 | 6 | 12 |
| HTOM | 4 | 8 | 12 |
| HIAC | 4 | 6 | 10 |
| HIA | 2 | 2 | 4 |
| HNAC | 0 | 2 | 2 |
| HAAC | 0 | 2 | 2 |
| HNA | 0 | 1 | 1 |
| HAA | 0 | 1 | 1 |
• Roanoke County population
33.1 mi, 
197°
• Greenbrier County
25.9 mi, 
291°
• Botetourt County
19.2 mi, 
143°
• Salem city
34.8 mi, 
184°
• Rockbridge County
30.7 mi, 
86°
• Monroe County
33.7 mi, 
240°
• Lexington city
30.8 mi, 90°
• Covington city
1.4 mi, 
118°
• Craig County
24.9 mi, 
209°
• Bath County
24.6 mi, 
37°
[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
See note 4 Virginia Notes
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