Gašljević families are Croats and they are mostly from Glina. In the past century, relatively most of Croatian residents bearing this family name were born in Glina and Slunj. In Čadovina in Podrinje (Bosnia) every eighth inhabitant had the family name Gašljević.
About 170 people with faimily name Gašljević live in Croatia today, in 70 households. There were 170 of them in the middle of the past century, and their number remains constant. They are located in the most of Croatian counties, in 21 cities and 21 other places, mostly in Zagreb (40), Catrnja in Duga Resa area (15), Bjelovar (15), Kaniska Iva (15), and in Glina (10).
At least six families with this surname emigrated from Croatia to the United States (4) and Switzerland (2). Family name Gašljević is present in this form only in Croatia.