A few, mostly as partial frames and stuff. There are a couple of reconstructions. One in Alabama, IIRC. There is the Confederate Navy Museum in Georgia, they have the C.S.S. Jackson, not a lot to look at, but some good history.
The Hartford's anchor is at the University of Hartford campus. Rather stupidly, the USN let the ship, essentially, rot at pierside. She was one of the more important ships in USN history, certainly more so than many of the ships which are being suggested for preservation.
The monitor USS Tecumseh lies on the bottom right off Ft. Morgan on Mobile bay. Efforts to get the money to raise her has been made but so far none have come to fruition. Too bad, there is no complete examples of this revolutionary ship design.