How many places in Ireland are called The Octagon?

There is one place named The Octagon in Ireland.

All places in the world called "The Octagon".

Location The Octagon:

• Mayo

Cities

Milltown (15)
Newtown (12)
Castletown (10)
Grange (10)
New Bridge (9)
Cappagh (8)
Raheen (7)
Kill (7)
Kilmore (7)
Brockagh (6)
Cashel (6)
Drinagh (6)
Johnstown (6)
Ballynamona (6)
Graigue (6)
Newcastle (6)
Whitechurch (6)
Churchtown (6)
Kilmurry (6)
Derry (5)
Esker (5)
Mullagh (5)
Ballynakill (5)
Rathmore (5)
Rossmore (5)
Ardagh (5)
Corbally (5)
Inch (5)
Knock (5)
Lecarrow (5)