An original ’Delgadillo’ spelling which came from the Iberian Peninsula between Spain and Portugal. From the Latin is ''delicatus'' which describes something special, something beautiful. The original Portuguese and Spanish term delgado means slender or a thin person.

Locations in the United States with the most surnames of Delgado are Texas and California.
In England, Middlesex and London have the largest number of surnames of Delgado.

Most Delgado families are laborers and farmers.

Famous: Anita Delgado (Spanish flamenco dancer), Humberto Delgado (Portuguese general), Pedro Degado (Spanish cyclist), Jamie Delgado (British tennis player), Jose M. Delgado (Spanish bullfighter), James P. Delgado (Canadian maritime archaeologist) and Trixi Delgado (German singer).