San Simeon (ZIP Code: 93452; area code 805) is a town and census-designated place on the Pacific coast of San Luis Obispo County, California. Its position along State Route 1 is approximately halfway between Los Angeles and San Francisco, each of those cities being roughly 230 miles (370 km) away. A key feature of the area is Hearst Castle, a hilltop mansion built by William Randolph Hearst in the early 20th century that is now a tourist attraction.