Šprajc families are Croats and they are mostly from Senj area. In the past century, relatively most of Croatian residents bearing this family name were born in Senj area and in Slavonski Brod. In places Stajnica and Križpolje in Senj area every thirtieth inhabitant had the family name Šprajc.
Prevalence
About 340 people with faimily name Šprajc live in Croatia today, in 150 households. There were 370 of them in the middle of the past century, and their number decreased by 10 percent. They are located in the most of Croatian counties, in 27 cities and 33 other places, mostly in Slavonski Brod (70), Zagreb (60), in Krizpolje (20) and Stajnica (15) in Senj area, and in Karlovac (15).
Outside Croatia
Family name Šprajc (including: Spreitz , Spraic and Sprajc ) is present in 7 countries on three continents. "Spraic " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.