- Duers Neck Landing
- Duffield
- Dug Hill
- Duhamel Corners
- Dukes Retreat
- Dulaney Gate
- Dulaney Hills
- Dulaney Ridge
- Dulaney Valley Estates
- Dulaney Village
- Dulany Hills
- Duley
- Dulls Corner
- Dumbarton
- Dun Rovin
- Dunbar
- Dunbrook
- Duncan Crossing
- Duncans Hill
- Dundalk
- Dundalk Mobile Home Court
- Dundee
- Dundee Village
- Dunfretten Estates
- Dunkeld Manor
- Dunkirk
- Dunkirk Fields
- Dunkirk Hall
- Dunkirk South
- Dunkirk Town Center