Highland is a city in San Bernardino County, California, United States. The population was 44,605 at the 2000 census. It also refers to a geographical area of the City of San Bernardino, and parts of unincorporated San Bernardino County. Highland is also the home of American Pizza Company, the 2006 Inland Empire magazine winner for best pizza in San Bernardino and Riverside Counties. Highland apartments for rent comparison page shows most up to date rent information on Highland apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.