Family name Postus (Pos 
, Postus 
) , in all the world, is quite a common cognomen. The surname Postus is characteristic of Suriname, where it is quite a common surname, Afghanistan, where it is quite a rare surname, and Netherlands. Not in comparison with a country's population, this name is the most popular in Afghanistan, Indonesia, and Netherlands. Very seldom, Postus is the forename as well as the last name.