| Code | Name | Region |
|---|---|---|
| KRCHW | Changwon | 48 |
| KRCHO | Cheonan | 44 |
| KRCDO | Cheongdo-gun | 47 |
| KRCOJ | Cheongju | 43 |
| KRCJJ | Cheongju Apt | 43 |
| KRCSG | Cheongsong-gun | 47 |
| KRCWO | Cheongwon-gun | 43 |
| KRCYG | Cheongyang-gun | 44 |
| KRCWN | Cheorwon-gun | 42 |
| KRCGK | Chilgok-gun | 47 |
| KRCWR | Ch'irwon | 48 |
| KRCOG | Ch'ongdo | 47 |
| KRCHN | Chonju | 45 |
| KR | ||
| KRAWL | Aewol | 49 |
| KRADG | Andong | 47 |
| KRANJ | Anjeong | 48 |
| KRASN | Ansan | 41 |
| KRASG | Anseong | 41 |
| KRANY | Anyang | 41 |
| KRASA | Asan | 44 |
| KRBAA | Balan/hwaseoung | 41 |
| KRBIN | Biin | 44 |
| KRBEN | Boeun-gun | 43 |
| KRBDE | Bongdong-eup/wanju-gun | 45 |
| KRBHA | Bonghwa-gun | 47 |
| KRBOR | Boryeong | 44 |
| KRBSG | Boseong-gun | 46 |
| KRBAN | Buan-gun | 45 |
| KRBCN | Bucheon | 41 |