Last official estimated population of Arlington County was 209,395 (year 2014)[1]. This was 0.066% of total US population and 2.5% of total Virginia state population. Area of Arlington County is 26.1 mi² (=67.6 km²), in this year population density was 8,027.10 p/mi². If population growth rate would be same as in period 2010-2014 (+0.21%/yr), Arlington County population in 2026 would be 214,790 [0].
Historical population of Arlington County for period 1800-2014 [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
[1800-1810] +3.7 %/yr
[1810-1820] +1.27 %/yr
[1820-1830] -0.13 %/yr
[1830-1840] +0.4 %/yr
[1840-1850] +0.04 %/yr
[1850-1860] +2.37 %/yr
[1860-1870] +2.85 %/yr
[1870-1880] +0.46 %/yr
[1880-1890] +0.58 %/yr
[1890-1900] -10.08 %/yr
[1900-1910] +4.75 %/yr
[1910-1920] +4.6 %/yr
[1920-1930] +5.19 %/yr
[1930-1940] +7.92 %/yr
[1940-1950] +9.03 %/yr
[1950-1960] +1.89 %/yr
[1960-1970] +0.65 %/yr
[1970-1980] -1.32 %/yr
[1980-1990] +1.14 %/yr
[1990-2000] +1.02 %/yr
[2000-2005] -0.15 %/yr
[2005-2010] +2.03 %/yr
[2010-2014] +0.21 %/yr
Looking for settlements in Arlington County? Visit this page: Settlements in Arlington County, VA
Population of Arlington County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 7367 | 6712 | 14,079 |
| 5 to 9 | 5546 | 5330 | 10,876 |
| 10 to 14 | 4608 | 4470 | 9,078 |
| 15 to 19 | 4038 | 3967 | 8,005 |
| 20 to 24 | 7323 | 7276 | 14,599 |
| 25 to 29 | 16103 | 16691 | 32,794 |
| 30 to 34 | 14693 | 13972 | 28,665 |
| 35 to 39 | 10499 | 10099 | 20,598 |
| 40 to 44 | 8656 | 8268 | 16,924 |
| 45 to 49 | 7625 | 6925 | 14,550 |
| 50 to 54 | 6888 | 6486 | 13,374 |
| 55 to 59 | 5933 | 6016 | 11,949 |
| 60 to 64 | 5026 | 5348 | 10,374 |
| 65 to 69 | 3809 | 4042 | 7,851 |
| 70 to 74 | 2288 | 2680 | 4,968 |
| 75 to 79 | 1453 | 1707 | 3,160 |
| 80 to 84 | 977 | 1264 | 2,241 |
| 85+ | 882 | 1941 | 2,823 |
Arlington 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 | 95175 | 96085 | 191,260 |
| WAC | 91608 | 88721 | 180,329 |
| WA | 88186 | 85575 | 173,761 |
| NHWAC | 74688 | 73171 | 147,859 |
| NHWA | 71881 | 70562 | 142,443 |
| H | 18539 | 17109 | 35,648 |
| HWAC | 16920 | 15550 | 32,470 |
| HWA | 16305 | 15013 | 31,318 |
| AAC | 12878 | 14762 | 27,640 |
| NHAAC | 12474 | 14359 | 26,833 |
| AA | 10649 | 12728 | 23,377 |
| NHAA | 10484 | 12533 | 23,017 |
| BAC | 11282 | 11681 | 22,963 |
| NHBAC | 10329 | 10775 | 21,104 |
| BA | 10151 | 10537 | 20,688 |
| NHBA | 9465 | 9879 | 19,344 |
| TOM | 3717 | 3474 | 7,191 |
| NHTOM | 3045 | 2876 | 5,921 |
| IAC | 1769 | 1647 | 3,416 |
| HIAC | 986 | 879 | 1,865 |
| HBAC | 953 | 906 | 1,859 |
| IA | 857 | 761 | 1,618 |
| NHIAC | 783 | 768 | 1,551 |
| HBA | 686 | 658 | 1,344 |
| HTOM | 672 | 598 | 1,270 |
| HIA | 650 | 589 | 1,239 |
| HAAC | 404 | 403 | 807 |
| NAC | 358 | 318 | 676 |
| NHNAC | 253 | 214 | 467 |
| NHIA | 207 | 172 | 379 |
| HAA | 165 | 195 | 360 |
| NA | 154 | 119 | 273 |
| HNAC | 105 | 104 | 209 |
| NHNA | 93 | 63 | 156 |
| HNA | 61 | 56 | 117 |
• Fairfax County population
9.9 mi, 
250°
• Montgomery County
18.7 mi, 
342°
• Prince George's County
14.1 mi, 
104°
• District of Columbia
4.8 mi, 
68°
• Prince William County
23.8 mi, 
239°
• Alexandria city
4.1 mi, 
167°
• Manassas city
22.6 mi, 246°
• Fairfax city
10.8 mi, 
260°
• Manassas Park city
20.2 mi, 248°
• Falls Church city
4.1 mi, 
276°
[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 2 Virginia Notes
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