Lešnjaković families are Croats and they are mostly from Valpovo area. In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Valpovo area. In Satnica in Valpovo area every eighth inhabitant had the family name Lešnjaković.
Prevalence
About 80 people with faimily name Lešnjaković live in Croatia today, in 40 households. There were 100 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 6 Croatian counties, in 10 cities and 6 other places, mostly in Osijek (20), in Bizovac (20) and Satnica (15) in Valpovo area, Belisce (10), and in Zagreb (<10).
Outside Croatia
Family name Lešnjaković is present in three countries on two continents.
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.