| Main Post Offices | Phone No | Postal Code |
| Puttalam | 032 2265250 | 61300 |
| District Secretariat Postal Office - Puttalam | 032 2266375 | 61305 |
| Chilaw | 032 2222251, 032 2220665 | 61000 |
| Puttalam Cement Factory | 032 5673646 | 61326 |
| Wennappuwa | 031 2255251, 0312256821 | 61170 |
| Pallama | 032 2224928 | 61040 |
| Nattandiya | 032 2254252, 0322254253 | 61190 |
| Attawilluwa | 032 3329772 | 61328 |
| Nainamadama | 031 2255250 | 61120 |
| Kottanitivu | 032 2222789 | 61252 |
| Koswatte | 032 5673028 | 61158 |
| Marawila | 032 2254250 | 61210 |
| Mahawewa | 032 2254513, 0324921704, 0324921705 | 61220 |
| Madampe | 032 2247650, 0324921114, 0324921280 | 61230 |
| Katuneriya | 031 2255248, 0314922976, 0314922975 | 61180 |
| Palavi | 032 2269352 | 61280 |
| Norachcholai | 032 2268705 | 61342 |
| Sub Post Offices | Phone No | Postal Code |
| Mampuriya | 032 2268590 | 61341 |
| Dunkannawa | 032 2254218 | 61192 |
| Pallivasalthurai | 075 4324322, 071 3232196 | 61354 |
