Češnjaj families are Croats and they are mostly from Lepoglava area. In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica and in Lepoglava area. In Šinkovica Bednjanska in Lepoglava area every eighth inhabitant had the family name Češnjaj.
Prevalence
About 100 people with faimily name Češnjaj live in Croatia today, in 40 households. There were 90 of them in the middle of the past century, and their number increased by 10 percent. They are located in 8 Croatian counties, in 6 cities and 13 other places, mostly in Koprivnica (35), Varazdin (15), Sinkovica Bednjanska in Lepoglava area (15), Nedelisce in Cakovec area (<10), and in Starigrad (<10).
Outside Croatia
Family name Češnjaj is present in this form only in Croatia.
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.