The nominal value outstanding of government bonds at the end of June stood at €113.2 billion, according to figures from the Central Bank.
That was broadly unchanged from the figure at the end of May.
Residents held 47.7% of Irish government bonds.
Credit institutions and the Central Bank of Ireland accounted for 91% of these holdings.
The resident non-bank financial sector reported holdings of €2.76 billion in June.
The holders within this sector were predominately other financial intermediaries where total holdings stood at €1.13 billion.
32% of outstanding Government bonds will mature within the next 5 years.