The area code 707 is located in Benicia, California.
Area code 707 serves Benicia, California, a historic waterfront city on the Carquinez Strait in Solano County. This area code stretches from the North Bay into California’s North Coast and Wine Country, linking Benicia to a wide region known for vineyards, redwood forests, and coastal towns. Established in 1959 after a split from 415, 707 remains the primary area code for much of the North Coast, with the 369 overlay now providing additional numbers. Benicia adds rich history to the map: it briefly served as the California state capital from 1853 to 1854 and is home to the Benicia Arsenal and Benicia State Recreation Area.
"Year established: 1959" — North American Numbering Plan Administration (NANPA)
Beyond Benicia, area code 707 covers many communities across Napa, Sonoma, Solano, Lake, Mendocino, Humboldt, and Del Norte counties, including:
If you see a 707 phone number, it likely ties to Wine Country or the Redwood Empire. The region’s landmarks include Napa Valley vineyards, Sonoma Coast beaches, the Avenue of the Giants in Humboldt County, and Redwood National and State Parks up north. With the 369 overlay in place, new numbers may be assigned as 369, but they still serve the same towns as 707; 10‑digit dialing applies across the area. From Benicia’s bridges and bayside views to the redwoods and rugged coastline, area code 707 connects a diverse slice of Northern California.