The incident happened at about 5:45 p.m. Tuesday at 290 South Main St.
Investigators said the driver pulled into the parking spot and accidentally pressed the gas pedal instead of the brake.
The truck hit the woman before smashing into the storefront.
The woman was taken to an area hospital with non life-threatening injuries. The driver escaped injury and no one inside the store was injured, said authorities.
There was no word on whether the driver would be charged.
City News Service contributed to this report.