Tri-state area is an informal term in the United States which can refer to any of multiple areas that lie across three states. When referring to populated
estate industry. Tri-City, San Diego County, California, Oceanside, Vista, and Carlsbad Tri-City area in the San Francisco Bay Area refers to the three
County, California. With a 2020 population of 87,955, Livermore is the most populous city in the Tri-Valley, giving its name to the Livermore Valley. It is
County Tri-ValleyArea Amador Valley Livermore Valley San Ramon Valley Lamorinda North Bay Marin County West Marin Ross Valley Wine Country Napa Valley Russian