Er is één plaats met de naam Portland Island in Ierland.
Alle plaatsen in de wereld die "Portland Island" heten.
Milltown (15)
Newtown (12)
Castletown (10)
Grange (10)
New Bridge (9)
Cappagh (8)
Raheen (7)
Kill (7)
Kilmore (7)
Kilmurry (6)
Brockagh (6)
Cashel (6)
Drinagh (6)
Johnstown (6)
Ballynamona (6)
Graigue (6)
Newcastle (6)
Whitechurch (6)
Churchtown (6)
Togher (5)
Walterstown (5)
Derry (5)
Ballynakill (5)
Esker (5)
Mullagh (5)
Ardagh (5)
Rathmore (5)
Rossmore (5)
Corbally (5)
Inch (5)