Laco families are Croats and they are mostly from Vinkovci area. In the past century, relatively most of Croatian residents bearing this family name were born in Sinj and in Vinkovci area. In places Žeželovo and Kuliješ in Middle Bosnia every fifth inhabitant had the family name Laco.
Prevalence
About 300 people with faimily name Laco live in Croatia today, in 120 households. There were 110 of them in the middle of the past century, and their number more than doubled. They are located in the most of Croatian counties, in 16 cities and 25 other places, mostly in Otok in Sinj area (145), Zagreb (45), Stari Mikanovci in Djakovo area (15), Rijeka (10), and in Ivankovo in Vinkovci area (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1691 in source Catholic Church Parish Records.