Twin Peaks
Market InsightsTwin Peaks is an unincorporated community in San Bernardino County, California, United States, located on California State Route 189 2.5 miles west-southwest of Lake Arrowhead. Twin Peaks has a post office with ZIP code 92391, which opened in 1916.According to the Köppen Climate Classification system, Twin Peaks has a warm-summer Mediterranean climate, abbreviated "Csa" on climate maps.