In Croatia, Aranza families are Croats (from Kastel Sucurac ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and Kastel Sucurac.
Prevalence
About 30 people with faimily name Aranza live in Croatia today, in 14 households. There were 30 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties and threee other places, mostly in Kastel Novi (10), Kastel Stari (10), Split (<10), Pula (<5), and in Zadar (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.