Slipac families are Croats and they are mostly from middle Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Novi Travnik area) and in Middle Bosnia (Travnik area).
Prevalence
About 90 people with faimily name Slipac live in Croatia today, in 40 households. There were 10 of them in the middle of the past century, and their number multiplied. They are located in the most of Croatian counties, in 15 cities and 12 other places, mostly in Zagreb (35), Kutina (15), Velika Gorica (<10), Vodice (<10), and in Mavrinci in Rijeka area (<10).
Outside Croatia
Family name Slipac is present in 8 countries on two continents. The family name "Slipac " is used by small number of people in Austria and small number in the United States.
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.