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IECC 2021 · PNNL

Virginia climate zones

Virginia’s 133 counties fall in 4 IECC 2021 climate zones: 3A (19), 4 (1), 4A (109), 5A (4).

Zone 3A: warm-humid

Attic target R49 (ENERGY STAR)

Brunswick County (Mixed-humid) · Chesapeake City (Mixed-humid) · Emporia City (Mixed-humid) · Franklin City (Mixed-humid) · Franklin County (Mixed-humid) · Greensville County (Mixed-humid) · Halifax County (Mixed-humid) · Hampton City (Mixed-humid) · Isle of Wight County (Mixed-humid) · Mecklenburg County (Mixed-humid) · Newport News City (Mixed-humid) · Norfolk City (Mixed-humid) · Pittsylvania County (Mixed-humid) · Portsmouth City (Mixed-humid) · Southampton County (Mixed-humid) · Suffolk City (Mixed-humid) · Surry County (Mixed-humid) · Sussex County (Mixed-humid) · Virginia Beach City (Mixed-humid)

No zone on file

Bristol City (Mixed-humid)

Zone 4A: mixed-humid

Attic target R60 (ENERGY STAR)

Accomack County (Mixed-humid) · Albemarle County (Mixed-humid) · Alexandria City (Mixed-humid) · Amelia County (Mixed-humid) · Amherst County (Mixed-humid) · Appomattox County (Mixed-humid) · Arlington County (Mixed-humid) · Augusta County (Mixed-humid) · Bedford County (Mixed-humid) · Bland County (Mixed-humid) · Botetourt County (Mixed-humid) · Buchanan County (Mixed-humid) · Buckingham County (Mixed-humid) · Buena Vista City (Mixed-humid) · Campbell County (Mixed-humid) · Caroline County (Mixed-humid) · Carroll County (Mixed-humid) · Charles City County (Mixed-humid) · Charlotte County (Mixed-humid) · Charlottesville City (Mixed-humid) · Chesterfield County (Mixed-humid) · Clarke County (Mixed-humid) · Colonial Heights City (Mixed-humid) · Craig County (Mixed-humid) · Culpeper County (Mixed-humid) · Cumberland County (Mixed-humid) · Danville City (Mixed-humid) · Dickenson County (Mixed-humid) · Dinwiddie County (Mixed-humid) · Essex County (Mixed-humid) · Fairfax City (Mixed-humid) · Fairfax County (Mixed-humid) · Falls Church City (Mixed-humid) · Fauquier County (Mixed-humid) · Floyd County (Mixed-humid) · Fluvanna County (Mixed-humid) · Frederick County (Mixed-humid) · Fredericksburg City (Mixed-humid) · Galax City (Mixed-humid) · Giles County (Mixed-humid) · Gloucester County (Mixed-humid) · Goochland County (Mixed-humid) · Grayson County (Mixed-humid) · Greene County (Mixed-humid) · Hanover County (Mixed-humid) · Harrisonburg City (Mixed-humid) · Henrico County (Mixed-humid) · Henry County (Mixed-humid) · Hopewell City (Mixed-humid) · James City County (Mixed-humid) · King and Queen County (Mixed-humid) · King George County (Mixed-humid) · King William County (Mixed-humid) · Lancaster County (Mixed-humid) · Lee County (Mixed-humid) · Lexington City (Mixed-humid) · Loudoun County (Mixed-humid) · Louisa County (Mixed-humid) · Lunenburg County (Mixed-humid) · Lynchburg City (Mixed-humid) · Madison County (Mixed-humid) · Manassas City (Mixed-humid) · Manassas Park City (Mixed-humid) · Martinsville City (Mixed-humid) · Mathews County (Mixed-humid) · Middlesex County (Mixed-humid) · Montgomery County (Mixed-humid) · Nelson County (Mixed-humid) · New Kent County (Mixed-humid) · Northampton County (Mixed-humid) · Northumberland County (Mixed-humid) · Norton City (Mixed-humid) · Nottoway County (Mixed-humid) · Orange County (Mixed-humid) · Page County (Mixed-humid) · Patrick County (Mixed-humid) · Petersburg City (Mixed-humid) · Poquoson City (Mixed-humid) · Powhatan County (Mixed-humid) · Prince Edward County (Mixed-humid) · Prince George County (Mixed-humid) · Prince William County (Mixed-humid) · Pulaski County (Mixed-humid) · Radford City (Mixed-humid) · Rappahannock County (Mixed-humid) · Richmond City (Mixed-humid) · Richmond County (Mixed-humid) · Roanoke City (Mixed-humid) · Roanoke County (Mixed-humid) · Rockbridge County (Mixed-humid) · Rockingham County (Mixed-humid) · Russell County (Mixed-humid) · Salem City (Mixed-humid) · Scott County (Mixed-humid) · Shenandoah County (Mixed-humid) · Smyth County (Mixed-humid) · Spotsylvania County (Mixed-humid) · Stafford County (Mixed-humid) · Staunton City (Mixed-humid) · Tazewell County (Mixed-humid) · Warren County (Mixed-humid) · Washington County (Mixed-humid) · Waynesboro City (Mixed-humid) · Westmoreland County (Mixed-humid) · Williamsburg City (Mixed-humid) · Winchester City (Mixed-humid) · Wise County (Mixed-humid) · Wythe County (Mixed-humid) · York County (Mixed-humid)

Zone 5A: cool-humid

Attic target R60 (ENERGY STAR)

Alleghany County (Cold) · Bath County (Cold) · Covington City (Cold) · Highland County (Cold)