Red Lion Hundred is a historical, political subdivision of New Castle County.
"The Hundred" hundred is an historical or geographical term rather than a functioning administrative unit. In Delaware the hundreds are now used primarily for property descriptions in real estate transactions or for historical reference, not for governing.
Red Lion is that portion of the county that lies south of Red Lion Creek, north of the Chesapeake and Delaware Canal, and generally east of Red Lion Road (Route 71).