Fairfax County ZIP Codes
Fairfax County is a county of Virginia.
- ZIP codes
- 74
- Cities & towns
- 24
- Area codes
- 2
- Land area
- 391 sq mi
Every ZIP code in Fairfax County
| ZIP code | City |
|---|---|
| 20120 | Centreville |
| 20121 | Centreville |
| 20122 | Centreville |
| 20124 | Clifton |
| 20151 | Chantilly |
| 20153 | Chantilly |
| 20170 | Herndon |
| 20171 | Herndon |
| 20172 | Herndon |
| 20190 | Reston |
| 20191 | Reston |
| 20192 | Herndon |
| 20194 | Reston |
| 20195 | Reston |
| 20196 | Reston |
| 22003 | Annandale |
| 22009 | Burke |
| 22015 | Burke |
| 22027 | Dunn Loring |
| 22032 | Fairfax |
| 22033 | Fairfax |
| 22034 | Fairfax |
| 22035 | Fairfax |
| 22036 | Fairfax |
| 22037 | Fairfax |
| 22039 | Fairfax Station |
| 22041 | Falls Church |
| 22042 | Falls Church |
| 22043 | Falls Church |
| 22044 | Falls Church |
| 22060 | Fort Belvoir |
| 22066 | Great Falls |
| 22067 | Greenway |
| 22079 | Lorton |
| 22081 | Merrifield |
| 22082 | Merrifield |
| 22095 | Herndon |
| 22096 | Reston |
| 22101 | Mc Lean |
| 22102 | Mc Lean |
| 22103 | West Mclean |
| 22106 | Mc Lean |
| 22107 | Mc Lean |
| 22108 | Mc Lean |
| 22109 | Mc Lean |
| 22116 | Merrifield |
| 22118 | Merrifield |
| 22119 | Merrifield |
| 22121 | Mount Vernon |
| 22122 | Newington |
| 22124 | Oakton |
| 22150 | Springfield |
| 22151 | Springfield |
| 22152 | Springfield |
| 22153 | Springfield |
| 22156 | Springfield |
| 22158 | Springfield |
| 22159 | Springfield |
| 22160 | Springfield |
| 22161 | Springfield |
| 22180 | Vienna |
| 22181 | Vienna |
| 22182 | Vienna |
| 22183 | Vienna |
| 22185 | Vienna |
| 22199 | Lorton |
| 22303 | Alexandria |
| 22306 | Alexandria |
| 22307 | Alexandria |
| 22308 | Alexandria |
| 22309 | Alexandria |
| 22310 | Alexandria |
| 22312 | Alexandria |
| 22315 | Alexandria |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Fairfax County codes above are listed without a column we would have to invent.
Cities and towns in Fairfax County
A further 16 places in Fairfax County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.
Area codes covering Fairfax County
Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.
Where Fairfax County's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope every ZIP code recorded in Fairfax County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.