72 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Centreville | 1 | 73,066 | 74,230 | 0.18% | 6,121 | 12 | CDP |
| Reston | 2 | 63,323 | 61,418 | 0.52% | 4,127 | 15 | CDP |
| McLean | 3 | 49,955 | 48,566 | 0.25% | 2,015 | 25 | CDP |
| Burke | 4 | 45,021 | 44,077 | 0.59% | 5,230 | 9 | CDP |
| Annandale | 5 | 42,660 | 42,240 | 0.26% | 5,436 | 8 | CDP |
| West Falls Church | 6 | 38,901 | 31,262 | 7.14% | 7,793 | 5 | CDP |
| Oakton | 7 | 37,120 | 36,468 | 0.53% | 3,803 | 10 | CDP |
| Fair Oaks | 8 | 36,357 | 34,466 | 1.14% | 7,283 | 5 | CDP |
| Tysons | 9 | 34,521 | 25,230 | 7.14% | 8,094 | 4 | CDP |
| Springfield | 10 | 31,156 | 32,960 | 0.14% | 3,971 | 8 | CDP |
| Fairfax | 11 | 26,880 | 24,147 | 2.05% | 4,307 | 6 | City |
| Fairfax | 12 | 26,880 | 24,179 | 2.05% | 4,307 | 6 | City |
| Herndon | 13 | 25,328 | 24,649 | 0.59% | 5,909 | 4 | Town |
| Herndon | 14 | 25,328 | 24,588 | 0.59% | 5,909 | 4 | Town |
| Bailey's Crossroads | 15 | 25,071 | 23,459 | 0.38% | 12,224 | 2 | CDP |
| West Springfield | 16 | 23,600 | 23,775 | 0.32% | 4,905 | 5 | CDP |
| McNair | 17 | 23,356 | 20,776 | 1.7% | 11,438 | 2 | CDP |
| Chantilly | 18 | 23,124 | 23,820 | 0.03% | 1,927 | 12 | CDP |
| Lorton | 19 | 22,909 | 20,924 | 1.27% | 4,301 | 5 | CDP |
| Merrifield | 20 | 21,101 | 18,523 | 1.9% | 7,818 | 3 | CDP |
| Lincolnia | 21 | 19,051 | 22,579 | -1.32% | 4,019 | 5 | CDP |
| Kingstowne | 22 | 18,896 | 17,585 | 1.19% | 6,589 | 3 | CDP |
| Franklin Farm | 23 | 18,807 | 18,845 | -0.17% | 3,960 | 5 | CDP |
| Hybla Valley | 24 | 18,680 | 18,438 | 1.04% | 9,099 | 2 | CDP |
| Burke Centre | 25 | 18,076 | 17,952 | 0.28% | 5,770 | 3 | CDP |
| Idylwood | 26 | 17,913 | 18,099 | 0.24% | 6,395 | 3 | CDP |
| Franconia | 27 | 17,821 | 19,478 | -0.16% | 5,122 | 3 | CDP |
| Vienna | 28 | 16,590 | 16,473 | 0.17% | 3,768 | 4 | Town |
| Vienna | 29 | 16,590 | 16,448 | 0.17% | 3,768 | 4 | Town |
| Fort Hunt | 30 | 16,000 | 16,383 | -0.02% | 2,735 | 6 | CDP |
| Wolf Trap | 31 | 15,607 | 16,497 | -0.22% | 1,596 | 10 | CDP |
| Falls Church | 32 | 15,123 | 14,657 | 0.59% | 7,391 | 2 | City |
| Falls Church | 33 | 15,123 | 14,677 | 0.59% | 7,391 | 2 | City |
| Great Falls | 34 | 14,853 | 14,793 | -0.26% | 586 | 25 | CDP |
| Groveton | 35 | 14,624 | 14,664 | 0.01% | 3,364 | 4 | CDP |
| Huntington | 36 | 14,574 | 13,526 | 1.53% | 12,909 | 1 | CDP |
| Newington | 37 | 13,714 | 13,452 | 0.37% | 2,995 | 5 | CDP |
| Mount Vernon | 38 | 13,520 | 13,490 | 0.55% | 2,588 | 5 | CDP |
| Kings Park West | 39 | 13,220 | 14,090 | -0.08% | 4,471 | 3 | CDP |
| Difficult Run | 40 | 13,042 | 10,480 | 7.14% | 1,557 | 8 | CDP |
| Newington Forest | 41 | 12,698 | 12,484 | 0.13% | 3,832 | 3 | CDP |
| Fairfax Station | 42 | 12,339 | 12,364 | 0.17% | 1,359 | 9 | CDP |
| Dranesville | 43 | 12,212 | 11,929 | 0.16% | 3,181 | 4 | CDP |
| Lake Barcroft | 44 | 10,849 | 10,604 | 0.8% | 4,459 | 2 | CDP |
| Woodburn | 45 | 10,330 | 10,081 | 1.21% | 3,700 | 3 | CDP |
| George Mason | 46 | 10,147 | 9,948 | 0.43% | 3,998 | 3 | CDP |
| Bull Run | 47 | 9,380 | 6,886 | 7.14% | 650 | 14 | CDP |
| Fair Lakes | 48 | 9,162 | 8,398 | 0.89% | 3,869 | 2 | CDP |
| Seven Corners | 49 | 9,112 | 9,041 | -0.11% | 13,380 | 1 | CDP |
| Hutchison | 50 | 8,684 | 7,030 | 7.14% | 15,818 | 1 | CDP |
| Dunn Loring | 51 | 8,683 | 9,217 | -0.09% | 3,670 | 2 | CDP |
| Fort Belvoir | 52 | 7,994 | 7,794 | 0.76% | 903 | 9 | CDP |
| Braddock | 53 | 7,950 | 7,093 | 7.14% | 1,247 | 6 | CDP |
| Greenbriar | 54 | 7,890 | 7,976 | -0.23% | 5,071 | 2 | CDP |
| Long Branch | 55 | 7,646 | 7,906 | 0.05% | 3,094 | 2 | CDP |
| Mantua | 56 | 7,630 | 7,784 | 0.43% | 3,222 | 2 | CDP |
| Laurel Hill | 57 | 7,459 | 8,771 | 0.55% | 1,682 | 4 | CDP |
| Floris | 58 | 7,178 | 7,752 | -1.09% | 2,588 | 3 | CDP |
| South Run | 59 | 7,078 | 6,760 | 0.65% | 2,800 | 3 | CDP |
| North Springfield | 60 | 6,827 | 7,859 | -0.42% | 4,474 | 2 | CDP |
| Pimmit Hills | 61 | 6,601 | 6,064 | 0.5% | 4,451 | 1 | CDP |
| Union Mill | 62 | 5,378 | 4,362 | 7.15% | 539 | 10 | CDP |
| Crosspointe | 63 | 5,181 | 5,068 | -0.79% | 2,343 | 2 | CDP |
| Navy | 64 | 4,548 | 4,262 | 7.16% | 3,352 | 1 | CDP |
| Hayfield | 65 | 4,510 | 4,535 | 0.89% | 3,518 | 1 | CDP |
| Kings Park | 66 | 3,920 | 4,556 | -0.71% | 3,013 | 1 | CDP |
| Sully Square | 67 | 3,200 | 1,918 | 7.13% | 4,035 | 1 | CDP |
| Ravensworth | 68 | 2,710 | 2,841 | 0.59% | 3,001 | 1 | CDP |
| Mason Neck | 69 | 1,914 | 1,938 | -0.31% | 138 | 14 | CDP |
| Great Falls Crossing | 70 | 1,827 | 1,407 | 7.09% | 3,065 | 1 | CDP |
| Clifton | 71 | 242 | 243 | 0% | 988 | 0 | Town |
| Clifton | 72 | 242 | 242 | 0% | 988 | 0 | Town |
Centreville is the largest city in Fairfax County, with a population of 73,066.
Clifton is the smallest city in Fairfax County, with a population of 242.
There are 72 cities in Fairfax County, Virginia.