Oaklyn is a borough in Camden County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 4,038, reflecting a decline of 150 (-3.6%) from the 4,188 counted in the 2000 Census, which had in turn declined by 242 (-5.5%) from the 4,430 counted in the 1990 Census.
Oaklyn was once dense forest land which was inhabited by Lenape Native Americans. In 1681, a group of Quakers seeking religious freedom sailed from Ireland to Fenwick's Colony at Salem, New Jersey where they spent the winter. In 1682, they sailed up the Delaware River and settled on Newton Creek. William Bates, their leader, purchased 250 acres (1.0 km2) on the south side of Newton Creek from the local Native Americans. The original Quaker settlement, known as Newton Colony, was located in The Manor section of today's Oaklyn.
The Colony began to grow rapidly and the land was cleared for farming. Eventually two highways were laid out. One, from the Delaware River to Egg Harbor, followed an old Native American trail, which is today the Black Horse Pike. The other was known as the Long-a-coming trail, which extended from Atlantic City to Berlin and then from Berlin to Camden. This trail is now known as the White Horse Pike.