Sacramento Valley GuideThe Sacramento Valley is the northern part of the Central Valley in California. Sacramento is the region's biggest airport, offering flights from California cities, as well as other states. HotelsFind hotels in Sacramento, Oroville, Chico, Davis, North Highlands and more. SacramentoSacramento is the state capital of California in the United States. Sacramento is the oldest incorporated city in California, settled between the confluences of the Sacramento and American rivers. OrovilleOroville is a small town in the Sierra Nevada foothills of Northern California. With a population in the greater urban area of 40,000, it is the seat of Butte County. ChicoChico is in Butte County in California. It's best known for its State University. Sacramento CountySacramento County is a county in California in the Sacramento Valley Butte CountyButte County is in the Sacramento Valley of California. Yolo CountyYolo County is in the Sacramento Valley of California. Sutter CountySutter County is in the Sacramento Valley region of California. Colusa CountyColusa County is a rural county in the Sacramento Valley of California Glenn CountyGlenn County is in the Sacramento Valley region of California. Yuba CountyYuba County is in the Sacramento Valley region of California.