White Clay Creek Hundred is an unincorporated subdivision of New Castle County, Delaware. Hundreds were once used as a basis for representation in the Delaware General Assembly, and while their names still appear on all real estate transactions, they presently have no meaningful use or purpose except as a geographical point of reference.
White Clay Creek Hundred is that portion of New Castle County that lies north of the Christiana River and south and west of White Clay Creek, excepting that it also includes the small area west of the Christiana River immediately west of Newark, and excludes a larger area north and east of the Christiana River generally from the old Pennsylvania Railroad tracks to Cooch’s Bridge. It was formed from Christiana Hundred and New Castle Hundred in 1710 and was named for White Clay Creek that flows along its northern boundary.
Originally, the default boundary of Delaware and Maryland was the vague height of land between the Delaware River and Chesapeake Bay drainage basins and White Clay Creek Hundred extended to that point. With the running of the Mason–Dixon line in 1767, the western boundary of Delaware was established in its present location and became White Clay Creek Hundred’s western boundary. It was the gap between this line and the existing western boundary, the 12 mile arc drawn around the town of New Castle, which created the long-disputed area known as the Wedge.