There are 41 zip codes in Fairfax County, Virginia. The most populated is 22003, located in Annandale. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
2200358,872Annandale
2017151,081Herndon
2201544,959Burke
2017043,557Herndon
2012043,315Centreville
2203338,610Fairfax
2207936,857Lorton
2230936,265Alexandria
2204234,860Falls Church
2230632,842Alexandria
2215332,546Springfield
2210130,729Mc Lean
2215230,155Springfield
2231029,788Alexandria
2019129,758Reston
2203229,510Fairfax
2231529,358Alexandria
2204129,132Falls Church
2210228,356Mc Lean
2215027,734Springfield
2012127,428Centreville
2218226,892Vienna
2231226,573Alexandria
2218026,179Vienna
2204325,843Falls Church
2015121,893Chantilly
2019021,121Reston
2212418,449Oakton
2203917,624Fairfax Station
2206616,925Great Falls
2215116,827Springfield
2230316,321Alexandria
2218115,698Vienna
2012415,117Clifton
2204414,042Falls Church
2230812,980Alexandria
2019412,576Reston
2230710,202Alexandria
220609,846Fort Belvoir
220271,974Dunn Loring
22035Fairfax
showing: 41 rows

Zip Codes in Fairfax County, Virginia by Population (2024)