One of the Most Valuable Coins Might Be Hiding in Your Change When was the last time you looked through your change? Many of us barely notice it at all, only glancing briefly while looking for a nickel or dime in the drive-thru. As it turns out, a small fortune could be hiding in plain sight, and we can thank the U.S. mint for that. Did you know that the U.S. actually have four different places where we make our money? The U.S. mint locations are in Philadelphia, San Francisco, Denver, and West Point. Fort Knox, Kentucky also harbors the nation's bullion.