In Croatia, Leuštek families are Croats (from Pregrada area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pregrada area and in Osijek. In Osredek Desinićki in Pregrada area every sixth inhabitant had the family name Leuštek.
Prevalence
About 30 people with faimily name Leuštek live in Croatia today, in 10 households. There were 30 of them in the middle of the past century, and their number remains constant. They are located in threee Croatian counties, four cities and threee other places, mostly in Osijek (<10), Mala Gora (<10), Valpovo (<5), Poznanovec in Lepoglava area (<5), and in Desinic Gora in Pregrada area (<5).
Outside Croatia
Family name Leuštek is present in three countries on three continents. The family name "Leustek " is used by some 80 people in the United States and small number in Egypt.
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.