Cognomen Heredia Castillo (Heredia Castillo 
) , in the world, is a rare last name. The surname Heredia Castillo is habitual in Latin America and the Caribbean, particularly the Dominican Republic, where it is a rare surname, Ecuador, and Chile. Not in comparison with a country's population, the name is most common in Ecuador, the Dominican Republic, and Spain.
| VARIANT | COUNTRY |
|---|---|
| Heredia Castillo | Dominican Republic, Spain, Ecuador, Finland, Chile |