| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|
| 20 | Guangzhou | Guangdong | 11,071,424 | China | Asia/Chongqing |
| 3011 | Zhumadian | Henan | 720,000 | China | Asia/Shanghai |
| 3013 | Runan County | Henan | 60,202 | China | Asia/Shanghai |
| 370 | Shangqiu | Henan | — | China | Asia/Shanghai |
| 371 | Zhengzhou | Henan | — | China | Asia/Shanghai |
| 372 | Anyang | Henan | 781,129 | China | Asia/Shanghai |
| 373 | Xinxiang | Henan | 743,601 | China | Asia/Shanghai |
| 374 | Xuchang | Henan | 449,258 | China | Asia/Shanghai |
| 375 | Pingdingshan | Henan | 889,675 | China | Asia/Chongqing |
| 376 | Xinyang | Henan | 1,590,668 | China | Asia/Shanghai |
| 377 | Nanyang, Henan | Henan | 251,532 | China | Asia/Chongqing |
| 378 | Kaifeng | Henan | 900,000 | China | Asia/Shanghai |
| 3832 | — | Henan | 94,290,000 | China | Asia/Shanghai |
| 3836 | — | Henan | 94,290,000 | China | Asia/Shanghai |
| 3881 | — | Henan | 94,290,000 | China | Asia/Shanghai |
| 3891 | Sanmenxia | Henan | — | China | Asia/Chongqing |
| 391 | Jiyuan | Henan | — | China | Asia/Chongqing |
| 392 | Hebi | Henan | 244,662 | China | Asia/Shanghai |
| 393 | Puyang | Henan | — | China | Asia/Shanghai |
| 394 | Zhoukou | Henan | 377,061 | China | Asia/Shanghai |
| 395 | Luohe | Henan | 417,356 | China | Asia/Shanghai |
| 396 | Zhumadian | Henan | 720,000 | China | Asia/Shanghai |
| 398 | Sanmenxia | Henan | — | China | Asia/Chongqing |