| Code | Name | Region |
|---|---|---|
| USDZL | Dalzell | SC |
| USD8A | Damariscotta | ME |
| USAR5 | Damascus | AR |
| USDAM | Damascus | GA |
| USZWF | Damascus | MD |
| USDSC | Damascus | OR |
| USD3U | Damascus | PA |
| USDMU | Damascus | VA |
| USDPT | Dana Point | CA |
| USDAH | Danboro | PA |
| USOA8 | Dale | IN |
| USYDE | Dale | WI |
| USDC2 | Dale City | VA |
| USDVY | Daleville | AL |
| USDKV | Daleville | IN |
| USDV4 | Daleville | VA |
| USDHT | Dalhart | TX |
| USIJS | Dalies | NM |
| USDLX | Dallas | GA |
| USZCO | Dallas | IA |
| USDLB | Dallas | MO |
| USDAC | Dallas | NC |
| USDAE | Dallas | OR |
| USDSP | Dallas | PA |
| USDAL | Dallas | TX |
| USDC6 | Dallas Center | IA |
| USDCX | Dallas City | IL |
| USDFW | Dallas-fort Worth Int Apt | TX |
| USDAZ | Dallastown | PA |
| USDL6 | Dalmatia | PA |
| USYXB | Cypress Bend | AR |
| USDCQ | Dacono | CO |
| USDQL | Dacula | GA |
| USDDB | Dade City | FL |
| USDDL | Dadeville | AL |
| USDAG | Daggett | CA |
| USD5W | Dagsboro | DE |
| USDCK | Dahl Creek | AK |
| USDQG | Dahlgren | IL |
| USDGN | Dahlgren | VA |
| USDHL | Dahlonega | GA |
| USDAI | Dailey | WV |
| USDFG | Daingerfield | TX |
| USD8R | Dairy | OR |
| USDKO | Dakota | IL |
| USKOF | Dakota | MN |
| USDAK | Dakota City | IA |
| USDKC | Dakota City | NE |
| USDTD | Dakota Dunes | SD |
| USDBO | Dalbo | MN |