Counties Infested With Hemlock Woolly Adelgid (HWA)

This list summarizes county infestations data from the USDA Forest Service and other published state government sources.

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State
Counties
Alabama
DeKalb
Alaska
Entire State
California
Entire State
Connecticut
Entire State
Delaware
Entire State
Georgia
Banks
Dade
Dawson
Fannin
Gilmer
Habersham
Hall
Lumpkin
Murray
Pickens
Rabun
Stephens
Walker
Towns
Union
White
Kentucky
Bell
Breathitt
Carter
Clay
Eliott
Fayette
Floyd
Harlan
Jackson
Johnson
Knott
Knox
Laurel
Lawrence
Lee
Leslie
Letcher
Madison
Magoffin
Martin
McCreary
Menifee
Morgan
Owsley
Perry
Pike
Powell
Pulaski
Rockcastle
Rowan
Wayne
Whitley
Wolfe
Massachusetts
Entire State
Maryland
Enitre State
Maine
Maine Towns and Counties Infested with Hemlock Woolly Adelgid
Michigan
Allegan
Mason
Muskegon
Oceana Ottawa
North Carolina
Entire State
New Hampshire
Entire State
New Jersey
Entire State
New York
Albany
Allegany
Broome
Bronx
Cattaraugus
Cayuga
Chataqua
Chemung
Chenango
Columbia
Cortland
Delaware
Dutchess
Erie
Fulton
Genesee
Greene
Kings
Livingston
Monroe
Montgomery
Nassau
New York
Onondaga
Ontario
Orange
Orleans
Oswego
Otsego
Putnam
Queens
Rensselaer
Richmond
Rockland
Saratoga
Schenectady
Schoharie
Schuyler
Seneca
Steuben
Suffolk
Sullivan
Tioga
Tompkins
Ulster
Warren
Washington
Wayne
Westchester
Wyoming
Yates
Oregon
Entire State
Ohio
Adams
Athens
Columbiana
Cuyahoga
Geauga
Highland
Hocking
Jackson
Jefferson
Lake
Lawrence
Mahoning
Meigs
Monroe
Portage
Scioto
Stark
Summit
Vinton
Washington
Pennsylvannia
Adams
Alleghany
Armstrong
Beaver
Bedford
Berks
Blair
Bradford
Bucks
Butler
Cambria
Cameron
Carbon
Centre
Chester
Clarion
Clearfield
Clinton
Columbia
Cumberland
Dauphin
Delaware
Elk
Erie
Fayette
Forest
Franklin
Fulton
Greene
Huntingdon
Indiana
Jefferson
Juniata
Lackawanna
Lancaster
Lawrence
Lebanon
Lehigh
Luzerne
Lycoming
Mckean
Mercer
Mifflin
Monroe
Montgomery
Montour
Northampton
Northumberland
Perry
Philadelphia
Pike
Potter
Schuylkill
Snyder
Somerset
Sullivan
Susquehanna
Tioga
Union
Venango
Warren
Washington
Wayne
Westmoreland
Wyoming
York
Rhode Island
Entire State
South Carolina
Greenville Oconee Pickens Spartanburg
Tennessee
Anderson
Bledsoe
Blount
Bradley
Campbell
Carter
Claiborne
Cocke
Cumberland
Fentress
Franklin
Grainger
Greene
Grundy
Hamblen
Hamilton
Hancock
Hawkins
Jefferson
Johnson
Knox
Loudon
Marion
McMinn
Meigs
Monroe
Morgan
Overton
Pickett
PolkPutnam
Rhea
Roane
Scott
Sequatchie
Sevier
Sullivan
Unicoi
Union
Van Buren
Warren
Washington
White
Vermont
Bennington Windham Windsor
Virginia
Abelmarle
Alexandria
Alleghany
Amherst
Appomattox
Arlington
Augusta
Bath
Bedford
Bedford City
Bland
Botetourt
Bristol
Buchanan
Buckingham
Buena Vista
Campbell
Caroline
Carroll
Charlottsville
Chesterfield
Clarke
Clifton Forge
Covington
Craig
Culpeper
Danville
Dickenson
Essex
Fairfax
Fairfax City
Falls Church
Fauquier
Floyd
Fluvanna
Franklin
Frederick
Galax
Giles
Grayson
Greene
Halifax
Hanover
Harrisonburg
Henrico
Henry
Highland
King William
Lee
Lexington
Loudon
Lunenburg
Lynchburg
Madison
Manassas
Manassas Park
Martinsville
Montgomery
Nelson
Northumberland
Norton
Orange
Page
Patrick
Pittsylvania
Prince William
Pulaski
Radford
Rappahannock
Richmond
Richmond City
Roanoke
Roanoke City
Rockbridge
Rockingham
Russel
Salem
Scott
Shenandoah
Smyth
Spotsylvania
Staunton
Tazewell
Warren
Washington
Waynesboro
Winchester
Wise
Wythe
Washington
Entire State
West Virginia
Barbour
Berkeley
Boone
Braxton
Cabell
Calhoun
Clay
Doddridge
Fayette
Gilmer
Grant
Greenbrier
Hampshire
Hardy
Harrison
Jackson
Jefferson
Kanawha
Lewis
Lincoln
Logan
Marion
Marshall
Mason
McDowell
Mercer
Mineral
Mingo
Monongalia
Monroe
Morgan
Nicholas
Ohio
Pendleton
Pleasants
Pocahontas
Preston
Putnam
Raleigh
Randolph
Ritchie
Roane
Summers
Taylor
Tucker
Tyler
Upsher
Wayne
Wirt
Webster
Wetzel
Wood
Wyoming

Updated March 2023