Vaccinium macrocarpon is hardy in these areas:

Allegan, MI	Allentown, PA	Almond, WI
Alsip, IL	Athens, MI	Augusta, MI
Bangor, MI	Battle Creek, MI	Bronxville, NY
Canton, MI	Carol Stream, IL	Casco, MI
Channahon, IL	Chicago Heights, IL	Chicago Ridge, IL
Chicago, IL	Cicero, IL	Cleveland, OH
Coal City, IL	Columbus, MI	Conneaut, OH
Crete, IL	Detroit, MI	Dewitt, MI
Dimondale, MI	Dolton, IL	Dorset, OH
Eagle, MI	East Claridon, OH	East Greenville, PA
East Lansing, MI	East Texas, PA	Eastchester, NY
Easton, PA	Eaton Rapids, MI	Ecorse, MI
Edmore, MI	Elkins Park, PA	Elmwood Park, IL
Elyria, OH	Emmaus, PA	Evergreen Park, IL
Ferndale, MI	Grand Rapids, MI	Grosse Pointe, MI
Hamtramck, MI	Harper Woods, MI	Harrison Township, MI
Hastings On hudson, NY	Heath, OH	Highland Park, MI
Homewood, IL	Jeffersonville, IN	Joliet, IL
Kalamazoo, MI	Kinsman, IL	Laconia, IN
Lakewood, OH	Landisburg, PA	Lanesville, IN
Lansing, IL	Lawn, PA	Leavenworth, IN
Lebanon, PA	Lemont, IL	Lemoyne, PA
Lewistown, PA	Lexington, IN	Lincolnshire, IL
Little York, IN	Littleton, CO	Liverpool, PA
Loysville, PA	Lykens, PA	Macomb, MI
Marysville, MI	Mcalisterville, PA	Memphis, MI
Mentor, OH	Middlefield, OH	Montville, OH
Morgantown, WV	Mount Clemens, MI	Mount Vernon, OH
Mundelein, IL	New Albany, OH	New Baltimore, MI
New Haven, MI	New York, NY	Newark, OH
Newbury, OH	North Chicago, IL	North Kingsville, OH
North Ridgeville, OH	North Street, MI	Northbrook, IL
Northfield, OH	Oak Park, MI	Oshkosh, WI
Palatine, IL