| City/County | Telephone Area Coce | Postcode |
| Guangzhou | 020 | 510000 |
| Huaxian | 02091 | 510800 |
| Zengcheng | 02095 | 511300 |
| Fanou | 02096 | 511400 |
| Wuchuan | 07679 | 524500 |
| Yunfu | 07665 | 527300 |
| Haikang | 07600 | 524200 |
| Dapu | 07633 | 514200 |
| Xingning | 07636 | 514500 |
| Lianxian | 07639 | 513400 |
| Denghai | 07641 | 515800 |
| Xuwen | 07670 | 524100 |
| Taishan | 07657 | 529200 |
| Shaoguan | 0751 | 512000 |
| Huizhou | 0752 | 516000 |
| Meizhou | 0753 | 514000 |
| Meixian | 0753 | 514000 |
| Shandou | 0754 | 515000 |
| Shenzhen | 0755 | 518000 |
| Zhuhai | 0756 | 519000 |
| Fushan | 0757 | 528000 |
| Zhaoqing | 0758 | 526000 |
| Zhenjiang | 0759 | 524000 |
| Fugang | 07615 | 511600 |
| Qingyuan | 07617 | 511500 |
| Dongguan | 07620 | 511700 |
| Jieyang | 07640 | 515500 |
| Jinning | 07649 | 515300 |
| Nanhai | 07651 | 528200 |
| Sanshui | 07652 | 528100 |
| Shunde | 07653 | 528300 |
| Zhongshan | 07654 | 528400 |
| Xinhui | 07656 | 529100 |
| Kaiping | 07658 | 529300 |
| Sihui | 07663 | 526200 |
| Yangchun | 07676 | 529600 |
| Yanjiang | 07677 | 529500 |
| Dianbai | 07678 | 525400 |
| Chaozhou | 07681 | 515600 |
| Jiangmen | 07682 | 529000 |
| Maoming | 07683 | 525000 |
| Suixi | 07671 | 524300 |
| Huazhou | 07673 | 525100 |
| Luoding | 07666 | 527200 |
| Yunan | 07667 | 527100 |
| Conghua | 07092 | 510900 |
| Lianjiang | 07672 | 524400 |
| Fengkai | 07669 | 526500 |
| Yunfu | 07665 | 527300 |
| Heyuan | 07623 | 517000 |
| Gaozhou | 07674 | 525200 |
| Fengshun | 07634 | 514300 |
| Yingde | 07616 | 513000 |
| Luochang | 07611 | 512200 |
| Wuhua | 07635 | 514400 |
| Jiaoling | 07632 | 514100 |
| Huilai | 07645 | 515200 |
| Huidong | 07628 | 516399 |
| Huiyang | 07621 | 516200 |
| Longmen | 02094 | 511200 |
| Enping | 07659 | 529400 |
| Heshan | 07680 | 529700 |
| Guangning | 07622 | 526300 |
| Gaoning | 07650 | 528500 |
| Doumen | 07655 | 519100 |
| Xinxing | 07664 | 527400 |
| Deqing | 07668 | 526600 |
| Boluo | 07622 | 516100 |
| Jiexi | 07648 | 515400 |
| Xinfeng | 02093 | 511100 |
| Pingyuan | 07637 | 514600 |
| Chaoyang | 07640 | 515100 |
| Nanao | 07643 | 515900 |
| Raoping | 07642 | 515700 |
| Haifeng | 07647 | 516400 |
| Lufeng | 07646 | 516500 |