Sonoma County, California, is located in the northern part of the San Francisco Bay Area. It is known for its picturesque landscapes, including rolling hills, vineyards, and coastal areas. The county is a significant part of California's wine country, home to many renowned wineries and vineyards, such as those in the Sonoma Valley and Russian River Valley. The county covers approximately 1,576 square miles and has a diverse population. Its largest city is Santa Rosa, which serves as the county seat. Sonoma County also features beautiful parks, including Sonoma Coast State Park and Annadel State Park, offering outdoor recreational opportunities for residents and visitors alike.