In Croatia, Tammaro families are Croats (from Rijeka ). In the past century, relatively most of Croatian residents bearing this family name were born in Srijem, Vojvodina.
Prevalence
Only a few people with faimily name Tammaro live in Croatia today, in one household only. They are located in one Croatian city only, in Rijeka (<5).
Outside Croatia
Family name Tammaro is present in 24 countries worldwide. The family name "Tammaro " is used by some 4000 people in Italy , about 1000 in the United States , and some 400 people in Argentina.