Last name Mercado Arroyo (Mercado Arroyo 
) , in the entire world, is a very rare cognomen. The cognomen Mercado Arroyo is habitual in Ecuador, where it is a rare surname, Colombia, where it is a very rare surname, and Spain, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Mercado Arroyo | Ecuador, Colombia, Spain |