Texas Municipalities and communities of New Castle County, Delaware, United StatesCounty seat: WilmingtonCities Delaware City New Castle Newark Wilmington Map of Delaware highlighting New Castle CountyTowns Bellefonte Clayton‡ Elsmere Middletown Newport Odessa Smyrna‡ Townsend Villages Arden Ardencroft Ardentown CDPs Bear Brookside Claymont Edgemoor Glasgow Greenville Hockessin North Star Pike Creek Pike Creek Valley Port Penn St. Georges Wilmington Manor Unincorporatedcommunities Ashland Augustine Beach Bellevue Belvedere Blackbird Blue Ball Boyds Corner Brackenville Carpenter Carrcroft Centerville Christiana Cleland Heights Collins Beach Corner Ketch Deerhurst Delaire Dunleith Edenridge Elmhurst Farnhurst Faulkland Fieldsboro Flemings Landing Foulk Woods Granogue Green Acres Green Meadow Greenbank Guyencourt Gwinhurst Hanbys Corner Hares Corner Hillcrest Holloway Terrace Holly Oak Kirkwood Lancashire Liftwood Lindamere Loveville Lynnfield Marshallton Mathews Corners Mayfield McClellandville McDaniel Heights McDonough Meadowbrook Mechanicsville Milford Crossroads Mill Creek Milltown Minquadale Monroe Park Montchanin Mount Cuba Mount Pleasant Naaman Naamans Gardens Ogletown Overlook Colony Pembrey Penarth Pennrock Perth Pennyhill Phillips Heights Pleasantville Porter Prices Corner Quarryville Red Lion Riverside Rockland Sharpley Shellburne Silverside Heights Silverside Silview Smyrna Landing‡ Stanton State Road Stockdale Summit Bridge Talleys Corner Talleyville Tavistock Taylors Bridge Tybouts Corner Twin Oaks Ways Corner Webster Farm Welshire Westover Hills Wilmont Windybush Woodbrook Wooddale Woodside Hills Worthland Wrangle Hill Yorklyn Hundreds Appoquinimink Blackbird Brandywine Christiana Mill Creek New Castle Pencader Red Lion St. George's White Clay Creek Wilmington Ghost towns Airport Villa Glenville Footnotes‡This populated place also has portions in an adjacent county or counties Delaware portal United States portal Subcategories This category has the following 7 subcategories, out of 7 total. Census-designated places in New Castle County, Delaware (1 C, 11 P) Towns in New Castle County, Delaware (3 C, 8 P) Unincorporated communities in New Castle County, Delaware (103 P)C Cities in New Castle County, Delaware (4 C, 4 P)F Former populated places in New Castle County, Delaware (1 P)H Historic districts in New Castle County, Delaware (1 C, 16 P)V Villages in New Castle County, Delaware (3 P)