The US Mint (a division of the US Treasury) earns $1,457,400,000 for the government by manufacturing and distributing pennies, nickels, dimes, and quarters. A penny is copper-plated zinc, where it is 2.5% copper and the rest zinc. The mint produced 12,773,000,000 pennies in 2001. Each penny cost $0.008 to produce, thats a profit of $24,600,000 in pennies. A nickel is 25% nickel and remainder copper. Each nickel cost $0.0331 to produce with 1,668,000,000 nickels minted in 2001 thats a profit of $28,600,000. A dime is copper and nickel clad, where nickel is 8.33%. There were 3,123,000,000 dimes made in 2001. Each dime is produced at a cost of $0.0230, for a total profit of $240,400,000. A Quarter is also copper and nickel clad, where nickel is 8.33%. It costs $0.0524 to produce each quarter, with 5,531,000,000 produced thats $1,080,400,000 in profit.
The US Mint is also the custodian for the US Treasuries gold and silver reserves. The Mint is the custodian of 245,262,897.04 fine troy oz of gold and 7,075,171.14 fine troy oz of silver.
The Bureau of Engraving and Printing is responsible for printing the paper money. In 2002 they printed
Each bill costs $0.03045 to produce, so all the bills in 2002 costs $243,502,560 for a profit of $56,838,097,440.