The appellation covers most of the county with the notable exceptions of the Los Carneros AVA and Sonoma Valley AVA wine regions, which are located in the southern portion of the county.
[3] The majority of the grape varieties grown in Sonoma County are grown in Northern Sonoma AVA, including Cabernet Sauvignon, Sauvignon blanc, Chardonnay, and Zinfandel.
[4] Zinfandel is more commonly grown in the Rockpile and Dry Creek Valleys.
[3] Gallo Family Vineyards are known for their Cabernet Sauvignon and Chardonnay while Rodney Strong Vineyards is known for its Zinfandel and Sauvignon blanc.
Bacigalupi Vineyards, situated in the Russian River Valley, are known for their Chardonnay.