| Code | Name | Region |
|---|---|---|
| USNVN | Nevada | IA |
| USNVD | Nevada | MO |
| USNVT | Nevada | TX |
| USNFC | Nevada City | CA |
| USNVI | Neville Island | PA |
| USZVI | Nevis | MN |
| USNWA | New Albany | IN |
| USNAM | New Albany | MS |
| USN4L | Nellysford | VA |
| USQSO | Nelson | CA |
| USNON | Nelson | GA |
| USNZL | Nelson | NE |
| USN8L | Nelson | NH |
| USQNL | Nelson | WI |
| USNLG | Nelson Lagoon | AK |
| USNOQ | Nelsonia | VA |
| USNNV | Nelsonville | OH |
| USNSJ | Nelsonville, Portage | WI |
| USNKM | Nemo | SD |
| USENN | Nenana | AK |
| USNDA | Neodesha | KS |
| USNE2 | Neoga | IL |
| USEOS | Neosho | MO |
| USNE9 | Neosho | MS |
| USNPH | Nephi | UT |
| USN8P | Neponset | IL |
| US9NT | Neptune | NJ |
| USNPB | Neptune Beach | FL |
| USNBK | Nebraska City | NE |
| USNEJ | Necedah | WI |
| USNEC | Neche | ND |
| USKHS | Neches | TX |
| USNDD | Nederland | CO |
| USNDX | Nederland | TX |
| US8DE | Needham | AL |
| USNEE | Needham | MA |
| USNDM | Needham Heights | MA |
| USEED | Needles | CA |
| USNZQ | Needmore | PA |
| USNVE | Needville | TX |
| USNMO | Neelys | MO |
| USUXK | Neenah | WI |
| USNB4 | Neets Bay | AK |
| USNEG | Negley | OH |
| USIEW | Neillsville | WI |
| USKOE | Nekoosa | WI |
| US4NE | Neligh | NE |
| USNS8 | Nellis Air Force Base | NV |
| USNC2 | National City | MI |
| USNTL | National Gardens | FL |