Chioggia represents a unique demographic case in Italy, and world-wide I’d say: because of the exceptional number of people bearing the same surname: either Boscolo or Tiozzo. I’ve looked in the phone book for Angelo Boscolo and I found about 40 of them!
The postmen were losing their minds, everybody’s surname was Boscolo…

Read more: http://www.italymag.co.uk/italy/arts-and-culture/calling-names