Harrisburg is the state capital of Pennsylvania, U.S.A. Its strategic position near a mountain pass and on key transport routes (the Pennsylvania Canal and the Pennsylvania Railroad) led to its growth in the 19th century as a highly industrialised city. See also Pittsburg Street.
There have been several American warships named USS Pittsburgh and USS Harrisburg, so it is possible that the streets are named after these ships rather than the cities. USS Pittsburgh came into the port of Belfast in 1925. However, both streets already existed in 1900 (Belfast and province of Ulster directory, 1900).
Owner Mr Wm Redmond on his property off York Road Harrisburg Street - 19th July 1899.