| Code | Name | Region |
|---|---|---|
| USNSD | North Shore | CA |
| USNSC | North Sioux City | SD |
| USNSM | North Smithfield | RI |
| USNSP | North Springfield | VT |
| USNO3 | North Stonington | CT |
| US8DN | North Stratford | NH |
| USNSI | North Syracuse | NY |
| USNTZ | North Tazewell | VA |
| USXJQ | North Tonawanda | NY |
| USNTY | North Troy | VT |
| USM2N | North Truro | MA |
| USYGD | North Ogden | UT |
| USNOD | North Olmsted | OH |
| USNO2 | North Oxford | MA |
| USPBN | North Palm Beach | FL |
| USRTP | North Palm Springs | CA |
| USN4P | North Pekin | IL |
| USNMP | North Pembroke | MA |
| USND8 | North Plainfield | NJ |
| USNPY | North Plains | OR |
| USLBF | North Platte | NE |
| USNTP | North Pole | AK |
| USNHF | North Port | FL |
| USNPZ | North Potomac | MD |
| USNDH | North Powder | OR |
| USNPE | North Prairie | WI |
| USNP3 | North Providence | RI |
| USXRO | North Randall | OH |
| USNRG | North Reading | MA |
| USNOI | North Richland Hills | TX |
| USNJR | North Ridgeville | OH |
| USNRY | North Liberty | IA |
| USNL9 | North Liberty | IN |
| USTHY | North Liberty | OH |
| USNLA | North Lima | OH |
| USN9T | North Lindenhurst | NY |
| USNLW | North Little Rock | AR |
| USNOJ | North Logan | UT |
| USNL3 | North Long Beach | CA |
| USNLQ | North Loup | NE |
| USNOS | North Manchester | IN |
| USNKA | North Mankato | MN |
| USNM7 | North Merrick | NY |
| USQNM | North Miami | FL |
| USZGV | North Miami Beach | FL |
| USPN9 | North Middleton | PA |
| USUHO | North Monmouth | ME |
| USM9K | North Muskegon | MI |
| USNMB | North Myrtle Beach | SC |
| USNNW | North Newton | KS |