eastern Pa - try lancaster area..most fo them are nice...
quakertown pa campgrounds are very.....skinhead, white supremist, rebel flags.....my family and i ended up there once and for our family it was not a good match....however soemone else may like that. The unfortunate thing is the campgrounds..were wonderful....nice spacious affordable, beautiful....just was to dangerous for my family
On the Delaware river is Tomickin (near new hope pa, a little north) right near the ringing stones...great campsite...excellent mixture of people...nice clean restrooms pools and lots of activties for all ages...teens and lil ones as well as seniors ...everything from bingo to dances to biking.
on opposite side the jersey side between lambertville and frenchtown is bulls island....it is a state park...and bring your innertubes it is right on the deleware and at a great tubing spot where ven the little ones can go with you..also next to the canal for some excellent bass fishing, canoing, and the tow path goes form bulls island all the way down to washingtons crossing for some great easy bike riding in both directions.
south of lambertville aobut a (6 mile bike ride from bulls island) is a wonderful flea market get their early saturday for the good stuff. also pleanty fo places to stop in each direction for lunch, breakfast, art galleries, etc etc.