Oscar D'León was a long-time resident of the Parroquia Antímano section of Caracas, Venezuela[1] (his father was a laborer at the neighborhood cemetery).

[1] With La Salsa Mayor he recorded the merengue standard "Juanita Morell", a version that became a radio hit in Puerto Rico.

[1] He has also performed in Japan, where he shocked a television host by heartedly recommending sexual intercourse as the key component of a healthy lifestyle during a live interview.

Oscar D'León has been a direct or indirect victim of various robberies, among them when he was robbed of $16,000 ,[2] and when a plaque dedicated to him was stolen in Barquisimeto nine hours after he had been honored with it and the city's keys on September 13, 2014.

[4] On July 7, 2015, he received a Honoris Causa PhD of the Universidad Pedagógica Experimental Libertador for being "a Venezuelan whose discipline and constancy in the development and execution of his musical art have led him to become artistic patrimony of Venezuela".