10. Pennsylvania

Average annual benefit: $18,185

In The Keystone State, 1,966,422 retirees averaged monthly benefits of $1,515.44. Pennsylvania does not tax benefits and exempts retirement income for seniors aged 60 and older. The state is considered retirement-friendly.

Sales tax is 6%, but it exempts medicines, food, heating fuels, and clothing. State income tax is a flat rate of 3.07%, but localities may impose additional taxes. There is a value-percentage-based inheritance tax but no estate tax.