Catalina is a census-designated place in Pima County, Arizona, United States. The population was 7,025 at the 2000 census. Catalina continues to experience increasing population growth, while attempting to maintain its rural character. Catalina remains an unincorporated community, with no plans for annexation into any nearby towns. Catalina apartments for rent comparison page shows most up to date rent information on Catalina apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.