Los Osos was combined with the adjoining unincorporated area of Baywood Park to form the census-designated place of Baywood-Los Osos, but they were split into separate CDPs for the 2010 census. The 2010 United States Census reported that Los Osos had a population of 14,276. The population density was 1,116.7 people per square mile (431.2/km2). The racial makeup of Los Osos was 12,304 (86.2%) White, 79 (0.6%) African American, 97 (0.7%) Native American, 748 (5.2%) Asian, 18 (0.1%) Pacific Islander, 552 (3.9%) from other races, and 478 (3.3%) from two or more races. Hispanic or Latino of any race were 1,977 persons (13.8%).