ZIP Code ZIP 91901

The 91901 ZIP code covers the mountain community of Alpine, California, situated in the foothills of San Diego’s East County roughly 30 miles east of downtown San Diego along Interstate 8. Sitting at an elevation of nearly 2,000 feet, the area is bounded by El Cajon and Blossom Valley to the west, the Cleveland National Forest and Cuyamaca Mountains to the east, the Viejas and Sycuan Reservation lands to the north and south, and the Sweetwater River basin. Known primarily for its spacious single-family homes, equestrian ranches, and semi-rural terrain, attached housing is relatively limited in this ZIP code; however, condo and townhouse listings generally cluster near the town center along Alpine Boulevard, Marshall Road, and Arnold Way, with prices ranging from approximately $409,000 to $570,000 for standard 2-to-3-bedroom units.