How many places in Canada are called O'Brien?

There is one place named O'Brien in Canada.

All places in the world called "O'Brien".

Location O'Brien:

• Ontario

Cities

Wellington (4)
Windsor (4)
Kingston (3)
Victoria (3)
Havelock (3)
Centreville (3)
Sidney (3)
Borden (3)
Princeton (3)
Westport (3)
Milton (3)
Richmond (3)
Benton (3)
Saint Andrews (3)
Selkirk (3)
Tracadie (3)
Albany (2)
Bon Accord (2)
Chatham (2)
Dorset (2)
Glenwood (2)
Minto (2)
Port Maitland (2)
Saint-Jean (2)
Souris (2)
Beaumont (2)
Caledonia (2)
Coleman (2)
Emerald (2)
Lloydminster (2)