ZIP Codes in Sterling, VA
Sterling uses 3 ZIP codes, all in Loudoun County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 3 Sterling ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 20164 | standard | Loudoun | 43,436 |
| 20165 | standard | Loudoun | 34,088 |
| 20166 | standard | Loudoun | 14,949 |
Finding a ZIP+4 in Sterling
Knowing which of these 3 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Sterling street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Sterling addresses and download it complete.