In Croatia, Špec families are generally Croats (from Sibenik ), very rarely Slovenes (from Pleternica ). In the past century, relatively most of Croatian residents bearing this family name were born in Herzegovina (Mostar area) and in Sibenik.
Prevalence
About 10 people with faimily name Špec live in Croatia today, in 8 households. There were 10 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties, in 6 cities and another small place , mostly in Sibenik (<10), Makarska (<5), Komorica (<5), Zagreb (<5), and in Dubrovnik (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1923 in source Emigration Commission Zagreb.