County ZIP codes · Virginia · FIPS 51059

Fairfax County, VA ZIP Codes

Fairfax County, Virginia has 80 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 47 residential and 33 for PO boxes or a single organization. 43 of the residential ones lie mainly in Fairfax County and 4 mainly in a neighboring county; 11 cross the county line. Median household income ranges from $87,626 in 22311 (Alexandria) to $250,000 or more in 4 ZIP codes at the Census top code (Census Bureau, ACS 2020-2024).

ACS2020-24
Census2020

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

22311 · $88k4 ZIP codes · $250k+

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $123,539 and $168,882. 4 report $250,000 or more, the Census top code.

They carry 19 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 47 residential ZIP codes in Fairfax County

43 ZIP codes lie mainly in Fairfax County; 4 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Fairfax County, largest first; "In this county" is the share of the ZIP's land in the county
						In this county
22030	Fairfax	61,332	3,154	$140k	$740k	76%
22003	Annandale	57,755	4,571	$139k	$732k	100%
20171	Herndon	51,286	4,415	$171k	$797k	100%
22015	Burke	44,647	5,261	$173k	$697k	100%
20170	Herndon	43,866	5,010	$160k	$647k	100%
20120	Centreville	42,896	2,386	$153k	$649k	90%
22033	Fairfax	39,526	5,054	$144k	$649k	100%
22031	Fairfax	37,276	5,230	$135k	$724k	82%
22042	Falls Church	35,483	5,526	$138k	$716k	99%
22079	Lorton	35,284	1,241	$148k	$638k	100%
22309	Alexandria	34,316	4,559	$107k	$567k	100%
22153	Springfield	32,664	3,687	$174k	$694k	100%
20191	Reston	31,011	3,998	$151k	$642k	100%
22101	McLean	30,953	2,362	$250k+	$1.45M	99%
22306	Alexandria	30,602	4,510	$97k	$594k	100%
22315	Alexandria	30,404	5,521	$160k	$618k	100%
22032	Fairfax	29,240	4,047	$178k	$799k	95%
22102	McLean	29,184	2,371	$154k	$956k	100%
22041	Falls Church	29,183	10,516	$93k	$452k	100%
22152	Springfield	28,814	4,779	$166k	$648k	100%
22310	Alexandria	28,136	4,173	$166k	$660k	100%
22150	Springfield	27,955	3,667	$123k	$636k	100%
20121	Centreville	27,788	3,209	$130k	$520k	100%
22182	Vienna	27,783	2,224	$205k	$1.13M	100%
22312	Alexandria	26,768	5,222	$109k	$604k	92%
22180	Vienna	26,568	4,509	$177k	$941k	100%
22043	Falls Church	25,750	5,510	$146k	$882k	99%
20151	Chantilly	22,610	1,426	$158k	$677k	100%
20190	Reston	22,012	5,045	$135k	$581k	100%
22039	Fairfax Station	19,626	831	$250k+	$1.02M	100%
22124	Oakton	18,091	1,752	$218k	$998k	100%
22066	Great Falls	17,185	672	$250k+	$1.31M	99%
22151	Springfield	17,017	3,345	$156k	$656k	100%
22303	Alexandria	16,922	8,804	$104k	$553k	100%
22181	Vienna	15,760	2,823	$212k	$998k	100%
20124	Clifton	14,375	663	$221k	$885k	100%
22308	Alexandria	14,090	3,177	$213k	$914k	100%
22044	Falls Church	13,996	6,534	$101k	$776k	94%
20194	Reston	12,275	3,937	$171k	$827k	100%
22060	Fort Belvoir	10,641	810	$106k	$764k	100%
22307	Alexandria	10,343	3,321	$142k	$779k	100%
22027	Dunn Loring	1,939	3,044	$250k+	$1.1M	100%
22035	Fairfax	no residents	0	–	–	100%

Partly in Fairfax County

Residential ZIP codes mainly in another county that reach at least 1% into Fairfax County, by their share here
						In this county
22046	Falls Church	18,169	6,670	$169k	$1.01M	34%
22311	Alexandria	19,337	12,492	$88k	$760k	24%
22302	Alexandria	18,026	7,951	$124k	$631k	4%
22304	Alexandria	48,613	10,032	$102k	$508k	3%

Download the 80 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

14 ZIP codes of Fairfax County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Fairfax County and in the neighboring counties
ZIP	In Fairfax	Elsewhere
22030	76%	Fairfax city24%
22304	3%	Alexandria city97%
20120	90%	Loudoun County10%
22031	82%	Fairfax city18%
22042	99%
22101	99%
22032	95%	Fairfax city5%
22312	92%	Alexandria city8%
22043	99%	Falls Church city1%
22311	24%	Alexandria city76%
22046	34%	Falls Church city66%
22302	4%	Alexandria city96%
22066	99%
22044	94%	Falls Church city6%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

PO Box and single-organization ZIP codes

ZIP codes in Fairfax County without a residential area (GeoNames postal codes)
ZIP	Postal name
20122	Centreville
20153	Chantilly
20172	Herndon
20192	Herndon
20195	Reston
20196	Reston
22009	Burke
22034	Fairfax
22036	Fairfax
22037	Fairfax
22067	Greenway
22081	Merrifield
22082	Merrifield
22095	Herndon
22096	Reston
22103	West McLean
22106	McLean
22107	McLean
22108	McLean
22109	McLean
22116	Merrifield
22118	Merrifield
22119	Merrifield
22121	Mount Vernon
22122	Newington
22156	Springfield
22158	Springfield
22159	Springfield
22160	Springfield
22161	Springfield
22183	Vienna
22185	Vienna
22199	Lorton

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do Fairfax County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Fairfax County's ZIP codes use 4 prefixes: 201, 220, 221 and 223.

Three-digit prefixes of Fairfax County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Fairfax County's
Prefix	Sectional center	Here	All codes
201	Dulles, VA (SCF 201)	15	80
220	Northern, VA (SCF 220)	26	30
221	Northern, VA (SCF 220)	28	37
223	Northern, VA (SCF 220)	11	21

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.

Where are the ZIP codes of Fairfax County?