| Code | Name | Region |
|---|---|---|
| USHKH | Cheshire | OH |
| USKQC | Cheshire | OH |
| USC29 | Cheshire | OR |
| USCQS | Chesnee | SC |
| USXSE | Chester | CA |
| USADJ | Chester | CT |
| USVKR | Chester | GA |
| USCSI | Chester | IL |
| US2CS | Chester | MD |
| US6CM | Chester | ME |
| USKXR | Chester | NH |
| USCYZ | Chester | NJ |
| USCSR | Chester | NY |
| USSE9 | Chester | OH |
| USCHT | Chester | PA |
| USCQZ | Chester | SC |
| USCSZ | Chester | VA |
| USACL | Chester | VT |
| USC5H | Cherry Bend | MI |
| USCHX | Cherry Hill | NJ |
| USC5V | Cherry Hills Village | CO |
| US5CL | Cherry Log | GA |
| USCPO | Cherry Point | NC |
| USCP4 | Cherry Point | WA |
| US9CT | Cherry Tree | PA |
| US9CV | Cherry Valley | AR |
| USCHV | Cherry Valley | CA |
| US7CV | Cherry Valley | IL |
| USNY7 | Cherry Valley | NY |
| USCFF | Cherryfield | ME |
| USRYE | Cherryvale | KS |
| USVHY | Cherryville | MO |
| USCHJ | Cherryville | NC |
| USYV9 | Cherryville | PA |
| USCIJ | Chesaning | MI |
| USHTW | Chesapeake | OH |
| USUFG | Chesapeake | VA |
| USCC8 | Chesapeake City | MD |
| USC9H | Chelsea | PA |
| US6HC | Chelsea | VT |
| USHJM | Cheltenham | MD |
| USGMG | Chemung | NY |
| USCEX | Chena Hot Springs | AK |
| USDGE | Chenango Bridge | NY |
| USHFK | Chenango Forks | NY |
| USCN2 | Cheney | KS |
| USENY | Cheney | WA |
| USJHA | Chenoa | IL |
| USCCX | Chepachet | RI |
| USHCW | Cheraw | SC |