One of the original hundreds, Brandywine Hundred was named for the Brandywine Creek. Its primary towns are Bellefonte, Arden, Ardencroft, Claymont, Edgemoor and Talleyville.
An original hundred, Christiana was created in 1682. It was named for the Christiana Creek. The primary towns within Christiana are Elsmere, Centreville, Newport and Greenville.
New Castle Hundred was one of the original hundreds created in 1682. It was named for the town of New Castle, which is the primary town within the hundred.