Boyers is an unincorporated village in Marion Township, Butler County, Pennsylvania, United States. It has a small population with a few businesses located in the center of the town. Slippery Rock Creek flows through the community. The creek's source is a few miles to the east, in the small village of Hilliards. Pennsylvania Route 308 is one of the m…Boyers is an unincorporated village in Marion Township, Butler County, Pennsylvania, United States. It has a small population with a few businesses located in the center of the town. Slippery Rock Creek flows through the community. The creek's source is a few miles to the east, in the small village of Hilliards. Pennsylvania Route 308 is one of the main roads in the area, running through the center of Boyers.