How is Fairfax County Housing Choice Voucher tenant share calculated?

Tenant share is generally 30% of monthly adjusted gross income, capped by the RealMarket payment standard for the ZIP code zone and bedroom size.

What are the Fairfax County HCV RealMarket zones?

Fairfax County uses Blue, Green, and Yellow RealMarket zones. Blue has the highest payment standard; Yellow has the lowest.

Can I move to a different ZIP code and keep my voucher?

Housing Choice Vouchers are portable, but the subsidy may change based on the new ZIP code's payment standard and your income. Contact Fairfax County housing staff before moving.

Fairfax HCV Rent Calculator 2026 · Tenant Payment & Subsidy

HCV rent and subsidy estimate

Estimate tenant share and subsidy under a Fairfax County Housing Choice Voucher-style rule. Pick your ZIP code to auto-select the RealMarket zone; pick household size and bedrooms to set the right payment standard and income limit.

Unit & location

ZIP code Fairfax County ZIP. Auto-detects Blue/Green/Yellow zone. Fairfax payment standards Zone RealMarket zone set by ZIP code. Fairfax payment standards Bedrooms Payment standard depends on bedroom count.

Household & income

Household size (people) Used to scale the 50% AMI income limit. HUD income limits Annual gross income ($) Total yearly income before taxes. AMI tier (1-person basis) HUD 1-person income limit for the chosen tier. Scaled by household size. For 1 person, this limit scales to about 34,900/yr. Your income should be at or below this amount to qualify for programs at this tier. HUD income limits

Income adjustments (optional)

Dependents Number of dependents. HUD allows a deduction (~$480/yr each). Annual childcare / disability assistance ($/yr) Child care or attendant care costs that enable work. Out-of-pocket medical expenses ($/yr) For elderly/disabled households only. Amount above 3% of gross income may reduce adjusted income. Disability assistance expenses ($/yr) Attendant care / auxiliary apparatus expenses for a disabled family member. Elderly or disabled head/spouse (adds $400/yr allowance)

Rent & subsidy

Voucher payment standard ($/mo) Maximum rent+utilities the voucher covers by zone and bedroom. Fairfax payment standards Contract rent ($/mo) Rent on the lease before utilities. Utility allowance ($/mo) Amount the household pays for utilities. Defaults to 0 if included in rent. Fairfax payment standards

RealMarket ZIP Code Zones

Fairfax County Housing Choice Voucher payment standards are grouped into Blue, Green, and Yellow zones. Blue zones have the highest payment standards.

Zone	Area	ZIP codes
Blue	Chantilly / South Riding	20124, 20151
	Herndon / Reston	20171, 20190, 20194
	Fairfax City / Oakton / Vienna	22030, 22032, 22033, 22066, 22180, 22181, 22182
	McLean / Tysons	22101, 22102
	Springfield (south) / Burke / Fairfax Station	22015, 22032, 22039, 22152, 22153
	Kingstowne / Franconia (south)	22315, 22079
	Fort Belvoir area / Mount Vernon / Lorton	22060, 22079, 22308, 22309, 22310
	Blue zone total	20124, 20151, 20171, 20190, 20194, 22015, 22030, 22032, 22033, 22066, 22079, 22101, 22102, 22151, 22152, 22153, 22181, 22182, 22308, 22310, 22315
Green	Dulles / Sterling / Ashburn	20041, 20153, 20170, 20172, 20191, 20195
	Manassas Park area / Centreville / Clifton	20120, 20121, 20122
	Fairfax (east) / Merrifield	22031, 22042, 22043
	Falls Church / Seven Corners / Baileys Crossroads	22041, 22044, 22046
	Annandale	22003, 22042
	Idylwood / West Falls Church / Jefferson	22027, 22043, 22067
	Lake Ridge / Woodbridge (north)	22192, 22193, 22303
	Franconia / Rose Hill / Hayfield / Groveton	22303, 22310, 22312
	Alexandria border / Mount Vernon (northwest)	22303, 22306, 22307, 22309
	Green zone total	20041, 20120, 20121, 20122, 20153, 20170, 20172, 20191, 20195, 22009, 22027, 22031, 22035, 22039, 22040, 22041, 22042, 22043, 22067, 22081, 22103, 22106, 22116, 22121, 22122, 22124, 22150, 22160, 22180, 22183, 22185, 22199, 22303
Yellow	Annandale (north) / Bailey’s / North Springfield	22003, 22044, 22046
	Seven Corners / West Falls Church	22044, 22046
	Arlington border / Alexandria border	22306, 22307, 22312
	Hybla Valley / Fort Hunt / Mount Vernon (east)	22306, 22307, 22308
	Mason Neck	22060, 22079, 22309
	Yellow zone total	22003, 22044, 22046, 22060, 22306, 22307, 22309, 22312