There is one place named Harston Island in Canada.
All places in the world called "Harston Island".
Wellington (4)
Windsor (4)
Westport (3)
Milton (3)
Richmond (3)
Benton (3)
Saint Andrews (3)
Selkirk (3)
Tracadie (3)
Kingston (3)
Victoria (3)
Havelock (3)
Sidney (3)
Centreville (3)
Princeton (3)
Borden (3)
Cornwall (2)
Enterprise (2)
Hebron (2)
Lockeport (2)
Newcastle (2)
Roblin (2)
Sandy Lake (2)
Sydney (2)
Beaver (2)
Cambridge (2)
Charlottetown (2)
Delta (2)
Georgetown (2)
Kildonan (2)