La Jolla is a hilly seaside and affluent community within the city of San Diego, California, United States occupying 7 miles of curving coastline along the Pacific Ocean within the northern city limits.The population reported in the 2010 Census was 46,781. The 2004 estimated population was 42,808. La Jolla is surrounded on three sides by ocean bluffs and beaches and is located 12 miles north of Downtown San Diego, and 40 miles south of Orange County, The climate is mild, with an average daily temperature of 70.5 °FLa Jolla is home to a variety of businesses in the areas of lodging, dining, shopping, software, finance, real estate, bioengineering, medical practice and scientific research. The University of California San Diego is located in La Jolla, as are the Salk Institute, Scripps Institution of Oceanography, Scripps Research Institute, and the headquarters of National University.