Wineries and vineyards located within the defined boundaries, as well as those making wines that include grapes from the official Howell Mountain AVA, are eligible to be members of the Howell Mountain Vintners & Growers Association. The vineyards and wineries currently in the association are as follows:
Key: Tasting Room Grower
Elsberg Family Vineyards
Great Oak Vineyard
Heiser Vineyards
Sentinel Ridge Vineyard