In Croatia, Kresal families are Slovenes (from Porec ).
Prevalence
Only a few people with faimily name Kresal live in Croatia today, in one household only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in one Croatian city only, in Porec (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.