Laštre families are Croats and they are mostly from Sinj area. In the past century, relatively most of Croatian residents bearing this family name were born in Sinj area and in Split.
Prevalence
About 130 people with faimily name Laštre live in Croatia today, in 40 households. There were 80 of them in the middle of the past century, and their number increased by 60 percent. They are located in four Croatian counties, in 8 cities and 10 other places, mostly in Split (40), Crivac in Sinj area (25), Solin (25), Sinj (<10), and in Zagreb (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.