| Code | Name | Region |
|---|---|---|
| USXEV | Dracut | MA |
| USDNR | Drain | OR |
| USDK2 | Drake | AZ |
| USDSB | Drakesboro | KY |
| USDRK | Draper | AR |
| USDRQ | Draper | UT |
| USD2P | Draper | VA |
| USDVB | Dravosburg | PA |
| USD2D | Drayden | MD |
| USDY9 | Drayton | ND |
| USDMI | Drayton Plains | MI |
| USD3N | Drennen | WV |
| USD2R | Dresden | ME |
| US2DD | Dresden | MO |
| USAAU | Dresden | NY |
| USDSD | Dresden | TN |
| USDR8 | Dresden | TX |
| USDRC | Dresher | PA |
| USDSW | Dresser | WI |
| USDRM | Drew | MS |
| USDZR | Dover | TN |
| US8FX | Dover Foxcroft | ME |
| USVOI | Dover Plains | NY |
| USDOV | Dover-cheswold | DE |
| USDOW | Dowagiac | MI |
| US3DW | Dowling | TX |
| USUFO | Downers Grove | IL |
| USJDY | Downey | CA |
| USDWZ | Downey | PA |
| USDYH | Downieville | CA |
| USDOI | Downing | WI |
| USDNT | Downingtown | PA |
| US4DO | Downs | IL |
| USDQW | Downs | KS |
| USDV8 | Downsville | LA |
| USDWQ | Downsville | NY |
| USDXV | Downsville | WI |
| USDOY | Doyle | CA |
| USXFC | Doyle | TN |
| USDYL | Doylestown | PA |
| USDOG | Douglas, Allegan | MI |
| USDGW | Douglas/converse | WY |
| USUGW | Douglass | KS |
| USDGL | Douglassville | PA |
| USDGS | Douglaston/queens/new York | NY |
| USDGV | Douglasville | GA |
| USDO2 | Dousman | WI |
| USDC7 | Dove Creek | CO |
| USXEZ | Dover | DE |
| USDOR | Dover | FL |