Los Algodones is a town and borough in the municipality of Mexicali, Baja California, Mexico. Located on the United States-Mexico border to th…Los Algodones is a town and borough in the municipality of Mexicali, Baja California, Mexico. Located on the United States-Mexico border to the north and east, Los Algodones is south of Andrade, California, and close to five miles west of downtown Yuma, Arizona. It reported a population of 5,474 in the 2010 Mexican census. Los Algodones is popularly referred to as "Molar City" due to hundreds of dentists that cater to Americans seeking affordable dental care outside of the United States.