Bottoms Up Diaper Bank helps single mothers provide diapers for their children. According to the website, 1 in 3 families in the U.S. struggle to buy diapers for their children, which can cost $70 - $80 per month. The average baby needs 6 - 10 diapers per day. While Medicaid covers 47% of all births in the U.S., there is no government program that provides diapers as a basic need for babies.