A total of 980.78 million coins were struck, over 120 million more than the next highest month in April when 858.04 million coins were produced.
So far this year, the Mint has produced 4,817,550,000 coins.
Production increases occurred for cents, nickels and dimes.
The 631.6 million cents struck in June are an increase of almost 100 million from the month of May.
Nickel output edged up from May by approximately 18 million coins to reach 121.6 million.
The rate of output for dimes saw the greatest change. The 224.5 million June total was nearly double the 115.5 million struck in May.
Interestingly, no quarters were struck in June and the Denver Mint quarter total for the first six months of calendar 2012 was adjusted downward by 5.19 million pieces to 63.81 million.
Dollar production also came to a near halt as only 3,080,000 Presidential dollars were struck in Denver.
All half dollars produced in 2012 were struck in January.
If the Mint maintains the current pace, some 9.6 billion coins will be struck in calendar 2012.