- DeKalb
- Del Mar Woods
- Delafield
- Delavan
- Delbert Egan Housing Project
- Delbridge Island
- Delhi
- DeLong
- Delrey
- Delta
- Delwood
- Democrat Spring
- Denmark
- Denmark Island
- Dennison
- Denny
- Denrock
- Denton Island
- Denver
- Depler Springs
- Depue
- Derby
- Derby
- Derby Hills
- Derby Meadows
- Des Plaines
- Deselm
- Detroit
- Devereux Heights
- Devils Island