 According to the U.S. Census Bureau, San Diego County has a total area of , of that of it is land and of it (7.20%) is water.The area of Tijuana Municipality is ; the municipality includes part of the Coronado Islands, located off the coast of the municipality in the Pacific Ocean.This combined area, with the additional areas of Tecate, , and Rosarito Beach, , place the area of San Diego–Tijuana at .