Surname Vilch (Vilch 
) , all over the world, is a very rare family name. The surname Vilch is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname, Argentina, and Peru, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Brazil, Argentina, and the United States. Much less frequently, Vilch is the forename as well as the last name.