| Code | Name | Region |
|---|---|---|
| USNAQ | Norwalk | CA |
| USOHC | Northeast Cape | AK |
| USEJB | Northern Cambria | PA |
| USXJO | Northfield | IL |
| USNF8 | Northfield | MA |
| USNRE | Northfield | MN |
| USQQF | Northfield | NH |
| USNHL | Northfield | NJ |
| USQNF | Northfield | OH |
| USNTF | Northfield | VT |
| USNT2 | Northford | CT |
| USNKZ | Northfork | WV |
| USNGT | Northgate | ND |
| USNGL | Northglenn | CO |
| USNTI | Northlake | IL |
| US9NL | Northlake | TX |
| USNM4 | Northmoor | MO |
| USNHP | Northport | AL |
| USZZH | Northport | MI |
| USNQP | Northport | NY |
| USNRJ | Northridge | CA |
| USNHV | North Vassalboro | ME |
| USNVZ | North Venice | IL |
| USNVY | North Vernon | IN |
| USZJY | North Versailles | PA |
| USNFT | North Wales | PA |
| USNJW | North Walpole | NH |
| USWN3 | North Webster | IN |
| USNWY | North Weymouth | MA |
| USNXU | North White Plains | NY |
| USNW2 | North Wildwood | NJ |
| USNWB | North Wilkesboro | NC |
| USNW3 | North Windham | CT |
| USNVJ | North Windham | ME |
| USYNO | North Woodstock | NH |
| USNMU | North Yarmouth | ME |
| USNHM | Northampton | MA |
| USQNH | Northampton | PA |
| USNBO | Northborough | MA |
| USNTG | Northbridge | MA |
| USOBK | Northbrook | IL |
| USOIR | North River | NY |
| USNRU | North Riverside | IL |
| USNQZ | North Rose | NY |
| USZNR | North Royalton | OH |
| USNY5 | North Salem | NY |
| USNSL | North Salt Lake | UT |
| USNSA | North Santee | SC |
| USNCT | North Scituate | MA |
| USJTU | North Scituate | RI |