There are 17 zip codes in Loudoun County, Virginia. The most populated is 20147, located in Ashburn. * 2024 populations estimated based on the latest ACS 5-year data.
Zip Code | City | Population |
|---|---|---|
| 20147 | Ashburn | 66,917 |
| 20148 | Ashburn | 62,554 |
| 20176 | Leesburg | 50,640 |
| 20164 | Sterling | 42,310 |
| 20152 | Chantilly | 35,538 |
| 20165 | Sterling | 34,222 |
| 20105 | Aldie | 33,967 |
| 20175 | Leesburg | 33,189 |
| 20132 | Purcellville | 19,114 |
| 20166 | Sterling | 13,479 |
| 20141 | Round Hill | 8,425 |
| 20180 | Lovettsville | 7,571 |
| 20158 | Hamilton | 4,886 |
| 20117 | Middleburg | 2,997 |
| 20197 | Waterford | 2,359 |
| 20129 | Paeonian Springs | 533 |
| 20184 | Upperville | 442 |