Rosamond is an unincorporated community in Kern County, California, US, near the Los Angeles county line. Rosamond is part of Greater Los Angeles and is located in the Mojave Desert just north of Lancaster and Palmdale, the two largest cities in the Antelope Valley. As of the 2020 Census, Rosamond's population was 20,961. For statistical purposes, the United States Census Bureau has defined Rosamond as a census-designated place (CDP).