LPD-30, a future Amphibious Transport Dock, has officially been named the USS Harrisburg.
While not technically the first USS Harrisburg, the first use of the name long term for a purpose built warship.
There was a USS Harrisburg in 1918 during World War I, but it was an Auxiliary Cruiser, essentially a civilian ocean liner with a few guns mounted to its deck. Its activities were limited to transporting American troops to, and later from Europe during World War I.
Kind of interesting with the hundreds of vessels built during World War II, there never was a Harrisburg.
I know Dover, Delaware is trying to get a ship.