| Code | Name | Region |
|---|---|---|
| USJFB | Cannon Afb | NM |
| USCBX | Cannon Beach | OR |
| USCFS | Cannon Falls | MN |
| USCPA | Canoga Park | CA |
| USCG6 | Canon | GA |
| USCNE | Canon City | CO |
| USCNN | Canonsburg | PA |
| USNT5 | Canterbury | NH |
| USU5C | Cantil | CA |
| USAJX | Canton | CT |
| USCNX | Canton | GA |
| USCTJ | Canton | IL |
| USACU | Canton | MA |
| US9ON | Canton | ME |
| USCNT | Canton | MI |
| USCNZ | Canton | MO |
| USCNP | Canton | MS |
| USCNQ | Canton | NC |
| USC2P | Canal Point | FL |
| USXEQ | Canal Winchester | OH |
| USCND | Canandaigua | NY |
| USCNS | Canastota | NY |
| USXC3 | Canby | CA |
| USC4Y | Canby | MN |
| USCAB | Canby | OR |
| US9CN | Candia | NH |
| USCDL | Candle | AK |
| USFCD | Candler | FL |
| USCDF | Candler | NC |
| USXEC | Cando | ND |
| USCNR | Candor | NC |
| USD6C | Candor | NY |
| USCUQ | Caney | KS |
| USC8V | Caneyville | KY |
| USCNF | Canfield | OH |
| USC2O | Canisteo | NY |
| USIKS | Canistota | SD |
| USK85 | Canmer | KY |
| USCBU | Campbellsburg | KY |
| USQCP | Campbellsport | WI |
| USCMP | Campbellsville | KY |
| USTCP | Campbellton | FL |
| USADC | Camphill | PA |
| USCZZ | Campo | CA |
| USCBO | Campobello | SC |
| USCIM | Campti | LA |
| USCTP | Campton | KY |
| USCM6 | Campton | NH |
| USOVF | Camptonville | CA |
| USNZJ | Cana | VA |