| Code | Name | Region |
|---|---|---|
| USRAT | Raritan | NJ |
| USRSP | Raspberry Strait | AK |
| USRHU | Rathdrum | ID |
| USRTY | Ratliff City | OK |
| USRAN | Raton | NM |
| USRFA | Rattan | OK |
| USRN8 | Raven | VA |
| USXRA | Ravena | NY |
| USRA4 | Ravenden Springs | AR |
| USRV7 | Ravenel | SC |
| USR8K | Ravenna | KY |
| USR8V | Ravenna | MI |
| USRVD | Ravenna | NE |
| USRVN | Ravenna | OH |
| USDCP | Randolph | MO |
| USRLP | Randolph | MS |
| USDOP | Randolph | NE |
| US8RA | Randolph | NH |
| USRDP | Randolph | NJ |
| USRJD | Randolph | NY |
| USOL9 | Randolph | OH |
| USRPZ | Randolph | VT |
| USRNP | Randolph | WI |
| USTXH | Randolph Center | VT |
| USRLK | Random Lake | WI |
| USRGY | Rangeley | ME |
| USRNG | Rangely | CO |
| USJGR | Ranger | GA |
| USRGR | Ranger | TX |
| USIFR | Ranier | MN |
| 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 |