Baltimore, Annapolis and/or DC area campsites

I live right across the street from Patapsco,state park. There's a campground 5 min off 95 at the I -195 Catonsville exit. You can catch a train into DC from the BWI train station which is 10 minutes away or a couple commuter stations even closer. sites are wooded and spread out. Not sure about hookups. We can be at the inner Harbor in Baltimore in 20 minutes. Washington is 45 minutes during non rush hour by car. Annapolis is about the same. No bridge coming from this direction.