| Code | Name | Region |
|---|---|---|
| USYYZ | Rankin | PA |
| USRA7 | Ranlo | NC |
| USRNS | Ransom | PA |
| USRAV | Ransomville | NY |
| USRBO | Rancho Bernardo | CA |
| USRZC | Rancho Cordova | CA |
| USRCU | Rancho Cucamonga | CA |
| USRDO | Rancho Dominguez | CA |
| USRHG | Rancho Mirage | CA |
| US5RM | Rancho Murieta | CA |
| USRAZ | Rancho Palos Verdes | CA |
| USRPQ | Rancho Park | CA |
| USRSU | Rancho Santa Fe | CA |
| USRSM | Rancho Santa Margarita | CA |
| US8DD | Ranchos De Taos | NM |
| USXRN | Rancocas | NJ |
| USZE8 | Rand | WV |
| USRA9 | Randallstown | MD |
| USRD3 | Randle | WA |
| USRNJ | Randleman | NC |
| UST5R | Randlett | UT |
| USRDH | Randolph | MA |
| USR8D | Randolph | ME |
| USRD8 | Randolph | MN |
| USRA6 | Raleigh | IL |
| USRAG | Raleigh | NC |
| USXKZ | Ralls | TX |
| USJPH | Ralph | MI |
| USRLQ | Ralston | IA |
| USRAX | Ralston | NE |
| USRYP | Ramapo | NY |
| USRA2 | Ramer | AL |
| USRNX | Ramona | CA |
| USRXM | Ramona | OK |
| USRMP | Rampart | AK |
| USRSR | Ramseur | NC |
| USRMY | Ramsey | IN |
| USQNS | Ramsey | MN |
| USRMJ | Ramsey | NJ |
| USRBR | Ranburne | AL |
| USRW7 | Ranchester | WY |
| USRBK | Rancho | CA |
| USRBQ | Rancho Belago | CA |
| USRAC | Racine | WI |
| USQRD | Radcliff | KY |
| USDCF | Radcliffe | IA |
| USXLD | Radford | VA |
| USRPS | Radium Springs | NM |
| USRAR | Radnor | PA |
| USRM9 | Radom | IL |