ZIP Codes in Fairfax, VA
Fairfax uses 5 ZIP codes, all in Fairfax County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 5 Fairfax ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 22030 | standard | Fairfax | 61,332 |
| 22031 | standard | Fairfax | 37,276 |
| 22032 | standard | Fairfax | 29,240 |
| 22033 | standard | Fairfax | 39,526 |
| 22035 | standard | Fairfax | — |
Finding a ZIP+4 in Fairfax
Knowing which of these 5 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 Fairfax 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 Fairfax addresses and download it complete.