Poslon families are Croats and they are mostly from Krapina area. In the past century, relatively most of Croatian residents bearing this family name were born in Krapina area and in Krapina. In places Štuparje and Mala Pačetina in Krapina area every fifth inhabitant had the family name Poslon.
Prevalence
About 420 people with faimily name Poslon live in Croatia today, in 140 households. There were 50 of them in the middle of the past century, and their number multiplied. They are located in the most of Croatian counties, in 17 cities and 57 other places, mostly in Stuparje in Krapina area (85), Zagreb (45), Mala Pacetina in Krapina area (35), Krapina (25), and in Polje Krapinsko (25).
Outside Croatia
Family name Poslon is present in 6 countries on four continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.