How many places in Canada are called Post Office Island?

There is one place named Post Office Island in Canada.

All places in the world called "Post Office Island".

Location Post Office Island:

• Manitoba

Cities

Wellington (4)
Windsor (4)
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)
Kingston (3)
Victoria (3)
Beaumont (2)
Caledonia (2)
Coleman (2)
Emerald (2)
Lloydminster (2)
Nelson (2)
Riverside (2)
Saint Vincent (2)
Swift Current (2)
Weston (2)
Benton Station (2)
Delisle (2)
Frobisher (2)
Keswick (2)