Area code 831 serves California’s Central Coast, including Monterey, Santa Cruz, and Salinas. Created in 1998 from a split with 408, it covers an area known for agriculture, surfing, and coastal beauty. The region includes fertile farmland, research institutions, and iconic seaside towns. Seven-digit dialing remains in effect for local calls. The 831 code is synonymous with relaxed California living, environmental awareness, and a thriving farm-to-table culture. It’s frequently used in branding to reflect the region’s natural appeal and agricultural importance.