In Croatia, Kelhar families are Croats (from Zapresic area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zapresic.
Prevalence
Only a few people with faimily name Kelhar live in Croatia today, in two households only. They are located in only threee Croatian places: in Gornji Laduc in Zapresic area (<5), Zagreb (<5), and in Senkovec in Zapresic area (<5).
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.