Trouble is, there aren't many CGs in the NYC area, as you noted.
The one in Jersey City is probably the most popular, though it sure isn't much of a Campground...more of a Parking Lot with hook-ups. Still, if you are going to see NYC, it's the best place to stay, as it's so close, and has easy access to public transportation.
There may be other places up near Newburg/West Point in NY, where you could take the train down to the City, but since you would probably be spending the entire day in the city, why waste the time traveling on the train.
I understand that there is also Dry Camping at Floyd Bennett Field over in Brooklyn, which you can catch a bus & train into Manhattan, but if it was me, I'd be in Jersey City...worth the extra money.
Check
www.rvparkreviews.com for access to what is in the area....or at least, what has been reviewed by other campers.
Bill & Claudia / DD Jenn / DS Chris / GS MJDogs: Sophie, Abby, Brandy, Kahlie, Annie, Maggie, Tugger & Beau ๐RIP: Cookie, Foxy & Gidget @ Rainbow Bridge.๐2000 Winnebago "Minnie" 31C, Ford V-10
Purchased April 2008:B FMCA# F407293
The Pets