| 1 | One Loudoun CDP (north-northeast) | 16.7% |
| 2 | Hillsboro town (north) | 11.7% |
| 3 | Aldie CDP (south-southeast) | 9.2% |
| 4 | Cascades CDP (northeast) | 8.8% |
| 5 | Leesburg town (north-northeast) | 8.6% |
| 6 | Sterling CDP (west-southwest) | 8.1% |
| 7 | Aldie CDP (west-northwest) | 7.5% |
| 8 | Belmont CDP (north-northeast) | 6.9% |
| 9 | Waterford CDP (north-northwest) | 6.9% |
| 10 | Lansdowne CDP (northwest) | 6.1% |
| 11 | Lowes Island CDP (north-northeast) | 6.1% |
| 12 | University Center CDP (northwest) | 6.1% |
| 13 | Leesburg town (south-southwest) | 5.4% |
| 14 | Round Hill town | 5.4% |
| 15 | Hamilton town (west-southwest) | 5.2% |
| 16 | Kincora CDP (east-southeast) | 5.1% |
| 17 | Purcellville town (west-southwest) | 4.8% |
| 18 | Sterling CDP (east) | 4.5% |
| 19 | Moorefield CDP | 4.4% |
| 20 | University Center CDP (southeast) | 4.3% |
| 21 | Hamilton town (east-northeast) | 4.1% |
| 22 | Sterling CDP (west) | 4% |
| 23 | Countryside CDP (west) | 3.6% |
| 24 | Sugarland Run CDP (north) | 3.3% |
| 25 | Dulles Town Center CDP (north-northwest) | 3.2% |
| 26 | Kincora CDP (west-northwest) | 3.2% |
| 27 | Broadlands CDP (north-northwest) | 3% |
| 28 | Stone Ridge CDP (east-southeast 2) | 3% |
| 29 | Ashburn CDP (east-southeast) | 2.9% |
| 30 | Lovettsville town | 2.8% |
| 31 | Lansdowne CDP (southeast) | 2.7% |
| 32 | Waterford CDP (south-southeast) | 2.7% |
| 33 | Ashburn CDP (south-southeast) | 2.6% |
| 34 | Oak Grove CDP (north-northeast) | 2.6% |
| 35 | Ashburn CDP (north-northwest) | 2.5% |
| 36 | Belmont CDP (west-northwest) | 2.3% |
| 37 | Belmont CDP (southeast) | 2% |
| 38 | Goose Creek Village CDP (north-northwest) | 2% |
| 39 | One Loudoun CDP (south-southwest) | 1.9% |
| 40 | Purcellville town (east-northeast) | 1.9% |
| 41 | Aldie CDP (east) | 1.7% |
| 42 | Goose Creek Village CDP (east) | 1.6% |
| 43 | Lowes Island CDP (east-southeast) | 1.6% |
| 44 | Brambleton CDP (north) | 1.4% |
| 45 | Dulles Town Center CDP (south-southeast) | 1.1% |
| 46 | Countryside CDP (east) | 1% |
| 47 | Hillsboro town (south) | 1% |
| 48 | South Riding CDP (west-northwest) | 1% |
| 49 | Waterford CDP (southeast) | 1% |
| 50 | Sugarland Run CDP (south) | 0.9% |
| 51 | Stone Ridge CDP (east-southeast 1) | 0.7% |
| 52 | Stone Ridge CDP (west-northwest) | 0.6% |
| 53 | South Riding CDP (east-southeast) | 0.4% |
| 54 | Goose Creek Village CDP (east-southeast) | 0.3% |
| 55 | Arcola CDP (north-northwest) | 0% |
| 56 | Arcola CDP (south-southeast) | 0% |
| 57 | Belmont CDP (south-southeast) | 0% |
| 58 | Brambleton CDP (south) | 0% |
| 59 | Broadlands CDP (south-southeast) | 0% |
| 60 | Cascades CDP (southwest) | 0% |
| 61 | Countryside CDP (south-southeast) | 0% |
| 62 | Goose Creek Village CDP (northwest) | 0% |
| 63 | Goose Creek Village CDP (southwest) | 0% |
| 64 | Leesburg town (north) | 0% |
| 65 | Loudoun Valley Estates CDP (north-northeast) | 0% |
| 66 | Loudoun Valley Estates CDP (northwest) | 0% |
| 67 | Loudoun Valley Estates CDP (south-southeast) | 0% |
| 68 | Loudoun Valley Estates CDP (west-southwest) | 0% |
| 69 | Lowes Island CDP (southwest) | 0% |
| 70 | Oak Grove CDP (south-southwest) | 0% |
| 71 | South Riding CDP (east-northeast) | 0% |
| 72 | South Riding CDP (northeast) | 0% |
| 73 | South Riding CDP (west-southwest) | 0% |
| 74 | Waterford CDP (southwest) | 0% |