| Code | Name | Region |
|---|---|---|
| USNML | New London | IA |
| USNQV | New London | MO |
| USNXA | New London | NC |
| US6WN | New London | NH |
| USNED | New London | OH |
| USNW7 | New London | PA |
| USNLD | New London | WI |
| USNL2 | New Londonderry | NH |
| USXNW | New Madrid | MO |
| USNMT | New Market | AL |
| USNM5 | New Market | IA |
| USNM8 | New Market | MD |
| USNJP | New Market | TN |
| USN8M | New Marlborough | MA |
| USNSF | New Marshfield | OH |
| USNM2 | New Martinsville | WV |
| USNM6 | New Meadows | ID |
| USNZE | New Melle | MO |
| USNMI | New Miami | OH |
| US2H4 | New Hope | KY |
| USNHO | New Hope | MN |
| USNHI | New Hope | PA |
| USN4H | New Hope | TN |
| USNHN | New Hudson | MI |
| USNHY | New Hyde Park | NY |
| USARA | New Iberia | LA |
| USQNN | New Ipswich | NH |
| USNWJ | New Johnsonville | TN |
| USNKP | New Kensington | PA |
| USNKG | New Kingston | NY |
| USNEF | New Kingstown | PA |
| USNKX | New Knoxville | OH |
| USKGK | New Koliganek | AK |
| USNL4 | New Lebanon | OH |
| USNOX | New Lenox | IL |
| USNLX | New Lexington | OH |
| USNLR | New Liberty | IA |
| USNLI | New Lisbon | WI |
| USNLO | New London | CT |
| USG22 | New Gretna | NJ |
| USN6H | New Hamburg | NY |
| USEHH | New Hampshire | OH |
| USNIM | New Hampton | IA |
| USP6W | New Hampton | NH |
| USN9H | New Hampton | NY |
| USNJM | New Harmony | IN |
| USNHT | New Hartford | CT |
| USQND | New Hartford | NY |
| USHVN | New Haven | CT |
| USNVQ | New Haven | IL |