In Croatia, Alessio families are Croats by relative majority (from Umag ), less frequently Italians (from Buje ), and very rarely Slovenes (from Umag ). In the past century, relatively most of Croatian residents bearing this family name were born in Slovenia and in Umag. In Barbariga in Pula area every sixth inhabitant had the family name Alessio.
Prevalence
About 40 people with faimily name Alessio live in Croatia today, in 17 households. There were 30 of them in the middle of the past century, and their number increased by 30 percent. They are located in threee Croatian counties and 7 other places, mostly in Umag (<10), Juricani (<10), Pula (<5), Materada (<5), and in Novigrad (<5).
Outside Croatia
Family name Alessio is present in 36 countries worldwide. "Allessio " is used by some 200 people in the United States.