Last official estimated population of Frederick County was 78,592 (year 2014)[1]. This was 0.025% of total US population and 0.9% of total Virginia state population. Area of Frederick County is 415.5 mi² (=1076.2 km²), in this year population density was 189.15 p/mi². If population growth rate would be same as in period 2010-2014 (+0.09%/yr), Frederick County population in 2026 would be 79,459 [0].
Historical population of Frederick County for period 1790-2014 [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

[1790-1800] +2.32 %/yr
[1800-1810] -0.91 %/yr
[1810-1820] +0.91 %/yr
[1820-1830] +0.53 %/yr
[1830-1840] -5.86 %/yr
[1840-1850] +1.15 %/yr
[1850-1860] +0.35 %/yr
[1860-1870] +0.03 %/yr
[1870-1880] +0.56 %/yr
[1880-1890] +0.18 %/yr
[1890-1900] -2.96 %/yr
[1900-1910] -0.35 %/yr
[1910-1920] -0.26 %/yr
[1920-1930] +0.55 %/yr
[1930-1940] +0.62 %/yr
[1940-1950] +2.27 %/yr
[1950-1960] +2.27 %/yr
[1960-1970] +2.79 %/yr
[1970-1980] +1.69 %/yr
[1980-1990] +2.96 %/yr
[1990-2000] +2.62 %/yr
[2000-2005] +3.38 %/yr
[2005-2010] +2.29 %/yr
[2010-2014] +0.09 %/yr
Looking for settlements in Frederick County? Visit this page: Settlements in Frederick County, VA
Population of Frederick County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2455 | 2319 | 4,774 |
| 5 to 9 | 2879 | 2602 | 5,481 |
| 10 to 14 | 2903 | 2850 | 5,753 |
| 15 to 19 | 2739 | 2501 | 5,240 |
| 20 to 24 | 2542 | 2415 | 4,957 |
| 25 to 29 | 2449 | 2383 | 4,832 |
| 30 to 34 | 2577 | 2568 | 5,145 |
| 35 to 39 | 2477 | 2479 | 4,956 |
| 40 to 44 | 2716 | 2837 | 5,553 |
| 45 to 49 | 3033 | 3107 | 6,140 |
| 50 to 54 | 3316 | 3199 | 6,515 |
| 55 to 59 | 2871 | 2913 | 5,784 |
| 60 to 64 | 2264 | 2465 | 4,729 |
| 65 to 69 | 2030 | 2191 | 4,221 |
| 70 to 74 | 1501 | 1682 | 3,183 |
| 75 to 79 | 1090 | 1220 | 2,310 |
| 80 to 84 | 657 | 799 | 1,456 |
| 85+ | 494 | 854 | 1,348 |
Frederick 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 | 38136 | 38627 | 76,763 |
| NH | 37758 | 38491 | 76,249 |
| WA | 37393 | 37863 | 75,256 |
| NHWAC | 35182 | 35976 | 71,158 |
| NHWA | 34538 | 35312 | 69,850 |
| H | 3235 | 2893 | 6,128 |
| HWAC | 2954 | 2651 | 5,605 |
| HWA | 2855 | 2551 | 5,406 |
| BAC | 2552 | 2248 | 4,800 |
| NHBAC | 2343 | 2064 | 4,407 |
| BA | 2041 | 1716 | 3,757 |
| NHBA | 1899 | 1602 | 3,501 |
| TOM | 823 | 841 | 1,664 |
| AAC | 712 | 947 | 1,659 |
| NHAAC | 671 | 918 | 1,589 |
| NHTOM | 705 | 729 | 1,434 |
| AA | 523 | 759 | 1,282 |
| NHAA | 503 | 748 | 1,251 |
| IAC | 395 | 393 | 788 |
| NHIAC | 261 | 252 | 513 |
| HBAC | 209 | 184 | 393 |
| IA | 185 | 182 | 367 |
| HIAC | 134 | 141 | 275 |
| HBA | 142 | 114 | 256 |
| HTOM | 118 | 112 | 230 |
| HIA | 89 | 99 | 188 |
| NHIA | 96 | 83 | 179 |
| NAC | 61 | 60 | 121 |
| NHNAC | 42 | 47 | 89 |
| HAAC | 41 | 29 | 70 |
| NA | 28 | 23 | 51 |
| NHNA | 17 | 17 | 34 |
| HNAC | 19 | 13 | 32 |
| HAA | 20 | 11 | 31 |
| HNA | 11 | 6 | 17 |
• Loudoun County population
34.5 mi,
104°
• Berkeley County
20.8 mi,
35°
• Jefferson County
22.6 mi,
71°
• Shenandoah County
29.2 mi,
214°
• Warren County
20.6 mi,
171°
• Winchester city
5.1 mi,
113°
• Hampshire County
20.1 mi,
291°
• Morgan County
24.3 mi,
0°
• Clarke County
15.8 mi,
112°
• Hardy County
33.7 mi,
246°
[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 C42 Virginia Notes
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