New Castle
| Category: | County |
| State: | Delaware |
| Cities: | 17 |
Cities in New Castle |
|
| Bear | Newark |
| Claymont | Delaware City |
| Hockessin | Kirkwood |
| Middletown | Montchanin |
| New Castle | Odessa |
| Port Penn | Rockland |
| Saint Georges | Townsend |
| Winterthur | Yorklyn |
| Wilmington | |