The term NAPA NEIGHBOR is a 6-letter crossword solution which is the answer to the clue 'Sonoma'. Sonoma is a city in California located north of San Francisco and south of Mendocino County. It is part of the Wine Country region of California and is known for its wineries and vineyards. NAPA NEIGHBOR is the answer to the clue because it is the neighboring county to Sonoma, which is Napa County.