Millions of US coins and bills are exchanged daily and billions of them are in circulation.  Visual Economics put together a great graphic to compare the values and number of currency in circulation, and even looked at how long each stays in circulation. 

Would you have guessed there are almost 6 times as many $100 bills in circulation as there are $20 given that most ATMs use only $20s?  Would you have guessed the $5 bill has the shortest life expectency of any bill, or that there are 4 times as many pennies than any other coin?

Link

From the Upcoming ueue, submitted by OddNumber.