In Croatia, Spaija families are Croats (from Split ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and in Bjelovar area. In Donje Sitno in Split every ninth inhabitant had the family name Spaija.
Prevalence
About 40 people with faimily name Spaija live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number decreased by 20 percent. They are located in four Croatian counties and 5 other places, mostly in Split (25), Stobrec (<10), Kastel Sucurac (<5), Donje Sitno (<5), and in Zagreb (<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.