Solano County is a county in the state of California, located midway between San Francisco and Sacramento. It was one of the original counties of California, created in 1850. The county offers a mix of rural and suburban lifestyles with access to urban amenities. It is known for its rolling hillsides, waterfronts, and fertile farmland, providing opportunities for year-round outdoor recreational activities. The county seat is Fairfield. Solano County is part of the Vallejo–Fairfield metropolitan statistical area and is the northeasternmost county in the nine-county San Francisco Bay Area region.