Loudoun County Virginia has a total of 38 ZIP Codes. The ZIP Codes in Loudoun County range from 20101 to 20598. There are 7 ZIP Codes in Loudoun County that extend into adjacent counties (Clarke County, Fairfax County, Fauquier County, Jefferson County, and Montgomery County).
| ZIP Code | ZIP Code City/Town | |||
|---|---|---|---|---|
| Dulles | |||
| Dulles | |||
| Dulles | |||
| Dulles | |||
| Aldie | |||
| Middleburg | |||
| Middleburg | |||
| Centreville | |||
| Paeonian Springs | |||
| Philomont | |||
| Purcellville | |||
| Purcellville | |||
| Bluemont | |||
| Round Hill | |||
| Round Hill | |||
| Ashburn | |||
| Ashburn | |||
| Ashburn | |||
| Ashburn | |||
| Chantilly | |||
| Hamilton | |||
| Hamilton | |||
| Lincoln | |||
| Sterling | |||
| Sterling | |||
| Sterling | |||
| Sterling | |||
| Sterling | |||
| Herndon | |||
| Leesburg | |||
| Leesburg | |||
| Leesburg | |||
| Leesburg | |||
| Lovettsville | |||
| Upperville | |||
| Dulles | |||
| Waterford | |||
| DHS |