The one dollar has an average life span in circulation of 6.6 years according to the Federal Reserve. Compare that to the $100 bill, which has an average life span of 22.9 years because it doesn’t pass between users as frequently. In an interesting twist, the $5 bill has the shortest average lifespan, coming in at only 4.7 years.

Source: https://www.alliantcreditunion.org/money-mentor/the-dollar-bill-believe-it-or-not