Surname Postilion (Postiglione 
, Postillon 
, Postilion ) , around the globe, is quite a common family name. The family name Postilion is characteristic of Italy, where it is quite a rare surname, Uruguay, and Argentina, where it is a rare surname. In absolute terms, this name is the most popular in Italy, the United States, and Argentina. Much less frequently, Postilion is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Postiglione | Brazil, Italy, Argentina, United States, Uruguay |
| Postillon | Argentina, Peru, United States, France, Spain |
| Postilion | United States |