| City/County | Telephone Area Coce | Postcode |
| Nanjing | 025 | 210000 |
| Wuxi | 0510 | 214000 |
| Zhenjiang | 0511 | 212000 |
| Suzhou | 0512 | 215000 |
| Nantong | 0513 | 226000 |
| Yangzhou | 0514 | 225000 |
| Yancheng | 0515 | 224000 |
| Xuzhou | 0516 | 221000 |
| Huaiyin | 0517 | 223000 |
| Lianyungang | 0518 | 222000 |
| Changzhou | 0519 | 213000 |
| Danyang | 05211 | 212300 |
| Yangzhong | 05212 | 212200 |
| Jintan | 05214 | 213200 |
| Liyang | 05215 | 213300 |
| changshu | 05221 | 215500 |
| Shazhou | 05222 | 215600 |
| Wujiang | 05223 | 215200 |
| Kunshan | 05224 | 215300 |
| Taicang | 05225 | 215400 |
| Haimen | 05231 | 226100 |
| Qidong | 05232 | 226200 |
| Nantongxian | 05233 | 226300 |
| Rudong | 05234 | 226400 |
| Haian | 05235 | 226600 |
| Rugao | 05236 | 226500 |
| Taizhou | 05241 | 225300 |
| Jiangdu | 05244 | 225200 |
| Quning | 05261 | 221200 |
| Pixian | 05262 | 221300 |
| Xinyi | 05263 | 221400 |
| Peixian | 05264 | 221600 |
| Fengxian | 05265 | 221700 |
| Donghai | 05284 | 222300 |
| Xupu | 05291 | 211400 |
| Liuhe | 05294 | 211500 |
| Gaochun | 05295 | 211300 |
| Lishui | 05296 | 211200 |
| Jurong | 05297 | 212400 |