Blackbird Hundred

Important geographical features, in addition to Blackbird Creek, include the Delaware River, which forms its eastern boundary, the Smyrna River, formerly known as Duck Creek, which forms its southern boundary, and the North West Branch of the Smyrna River. It is entirely in the coastal plain region on the Delmarva Peninsula.

Important roads include portions of the Korean War Veterans Memorial Highway (Delaware Route 1), the DuPont Highway (U.S. Route 13), and the Thoroughfare Neck Road (Delaware Route 9). A portion of the old Delaware Railroad, subsequently the Delmarva branch of the Pennsylvania Railroad, now the Delmarva Central Railroad's Delmarva Subdivision, runs north–south through the hundred.

• The University of Delaware Library (2001). The Hundreds of Delaware. Retrieved August 17, 2005.