Carlos had a population of 28,406. The population density was 5,126.9 people per square mile (1,979.5/km²). The racial makeup of San Carlos was 22,497 (79.2%) White , 233 (0.8%) African American , 65 (0.2%) Native American , 3,267 (11.5%) Asian , 70 (0.2%) Pacific Islander , 827 (2.9%) from other races