Delaware County Selection List
| County Name | Created | Origin | County Seat | Coordinator |
|---|---|---|---|---|
| New Castle | 1673 | original | Wilmington | Yolanda Campbell Lifter |
 Kent |
1682 | Originally the Horrekill District, established in 1664. St. Jones County formed from Horrekill District in 1680, renamed Kent County in 1682. | Dover | |
Sussex |
1682 | Deale County was created in 1680. In 1682 Deale County, Delaware, along with a section of Maryland's Eastern Shore called Durham County, was renamed Sussex County, Delaware. | Lewes until 1791, then Georgetown | |