Median household income: $86,562

With approximately 80,000 residents, Napa is the second largest city in California’s wine country after Santa Rosa. Napa boasts a Mediterranean climate (chilly, wet winters and warm, dry summers) that makes the area ideal for growing grapes and other crops. The city employs more agricultural workers than most American cities. According to Zillow, the Napa median home value is approximately $660,000.