Acme is an unincorporated community in Donegal, Mount Pleasant and Bullskin townships in Pennsylvania, United States. The Acme ZIP code of 15610 extends well beyond the more densely populated part of the area, into rural parts of Don…Acme is an unincorporated community in Donegal, Mount Pleasant and Bullskin townships in Pennsylvania, United States. The Acme ZIP code of 15610 extends well beyond the more densely populated part of the area, into rural parts of Donegal Township in Westmoreland County and Bullskin Township in Fayette County.