Pa has some great State and federal parks.Most only have electric but Promised Land SP Pickeral Point Campground has a loop with full hookups if you can't do without.But others like Ricketts Glenn,no hookups has a 2 mile trail with 13 waterfalls ranging up to 90ft.We love Locust Lake and Pine Grove Furnace State parks but also Tioga -Hammond Lakes has some full hook up sites.Its a COE campground.Also many National Forest Campgrounds around the Allegeny resivour.Most have electric and some with FHU.Here's a link to Pa SP's website:
http://www.dcnr.state.pa.us/stateparks/findamap/index.htm