In Croatia, Bitto families are Croats (from Garesnica ). In the past century, relatively most of Croatian residents bearing this family name were born in Garesnica.
Prevalence
Only a few people with faimily name Bitto live in Croatia today, in one household only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in only one small Croatian place, in Tomasica (<10).
Outside Croatia
Family name Bitto (including: Bittoo , Bittó , Bietto and Bhitto ) is present in 33 countries worldwide. The family name "Bitto " is used by some 1000 people in Italy , about 700 in the United States , and some 600 people in Brazil.