Angwin, CA

ZIP code 94508 serves Angwin, a small community in Napa County on Howell Mountain. Its most prominent landmarks include the Pacific Union College campus and Angwin Airport, as well as the surrounding Howell Mountain wine-growing area, designated an American Viticultural Area. The landscape is rural, with vineyards, wooded hills, and open spaces; local services are concentrated near the community’s central roads.