<P> California has over 427,000 acres ( 1,730 km ) planted under vines mostly located in a stretch of land covering over 700 miles ( 1,100 km ) from Mendocino County to the southwestern tip of Riverside County . There are over 107 American Viticultural Areas ( AVAs ) , including the well - known Napa , Russian River Valley , Rutherford and Sonoma Valley AVAs . The Central Valley is California 's largest wine region stretching for 300 miles ( 480 km ) from the Sacramento Valley south to the San Joaquin Valley . This one region produces nearly 75 % of all California wine grapes and includes many of California 's bulk , box and jug wine producers like Gallo , Franzia and Bronco Wine Company . </P>
<P> California has over 427,000 acres ( 1,730 km ) planted under vines mostly located in a stretch of land covering over 700 miles ( 1,100 km ) from Mendocino County to the southwestern tip of Riverside County . There are over 107 American Viticultural Areas ( AVAs ) , including the well - known Napa , Russian River Valley , Rutherford and Sonoma Valley AVAs . The Central Valley is California 's largest wine region stretching for 300 miles ( 480 km ) from the Sacramento Valley south to the San Joaquin Valley . This one region produces nearly 75 % of all California wine grapes and includes many of California 's bulk , box and jug wine producers like Gallo , Franzia and Bronco Wine Company . </P>
where is the most wine produced in california
where is the most wine produced in california
The Central Valley
The Central Valley