Route 63 begins at an intersection between County Route 501 and Kennedy Boulevard in the community of North Bergen in Hudson County. The route progresses northward, concurrent with County Route 501, from the intersection along Bergen Boulevard, passing through a large residential and commercial community, passing to the east of the Fairview Cemetery, located in Fairview. After crossing into Bergen County, Routes 63 and 501 continue further, passing over County Route 48 on an overpass. Bergen Boulevard passes through the partial-residential/commercial community for a distance, becoming a divided highway until an intersection with Cliff Street. At Cliff Street, the right-of-ways come back together, and the highway itself passes the Mount Moriah Cemetery near a large high-rise. Routes 63 and 501 continues northward, passing a small set of tankers near the cemetery. There, the route returns to the commercial-residential split it once was, continuing through Ridgefield and into Fort Lee. At an intersection with a connector to Route 5, Routes 63 and 501 fork, with both routes heading to the west while a second Bergen Boulevard heads to the east. The two designated routes continue northward through the residential communities as Bergen Boulevard, entering the municipality of Palisades Park soon afterwards. Routes 63 and 501 continue northward, passing local businesses and residences on its way to the terminus of Route 63 at an interchange with US 1-9 and US 46. County Route 501 continues towards Route 93.
History
During the 1927 New Jersey state highway renumbering by the New Jersey State Highway Department, the alignment of current-day Route 63 was designated as State Highway Route S-1, a spur off of New Jersey Route 1. The route began at the Hudson County West Boulevard, heading northbound to Ridgefield, where it would meet Route 1, Route 6, U.S. Route 1, U.S. Route 9 and U.S. Route 46. Both intersections are now the termini to Route 63. Two years later, a remade legislation was performed in the New Jersey State Legislature, redefining the alignment for State Highway Route S-1, with the southern terminus changing to Hudson County Boulevard, a rename to the original southern terminus. Also, the northern terminus was then defined as being in Fort Lee. State Highway Route S-1 remained intact for the next two decades, and along with a suffixed spur, State Highway Route S-1-A, the two routes were thoroughfares through the southern Palisades. On January 1, 1953, the New Jersey State Highway Department went ahead with a second state highway renumbering. Route S-1 and its suffixed spur, Route S-1-A, were decommissioned in favor of new designations. State Highway Route S-1 became Route 63 while its suffixed spur became Route 67. Route 63 follows the same alignment as Route S-1 with no change in termini since the 1953 renumbering.
