| Area/District | Active Postcodes |
| PL1 | 1,581 |
| PL10 | 210 |
| PL11 | 402 |
| PL12 | 865 |
| PL13 | 536 |
| PL14 | 1,282 |
| PL15 | 1,014 |
| PL16 | 125 |
| PL17 | 522 |
| PL18 | 256 |
| PL19 | 852 |
| PL2 | 846 |
| PL20 | 575 |
| PL21 | 762 |
| PL22 | 236 |
| PL23 | 197 |
| PL24 | 291 |
| PL25 | 1,189 |
| PL26 | 964 |
| PL27 | 691 |
| PL28 | 261 |
| PL29 | 66 |
| PL3 | 877 |
| PL30 | 603 |
| PL31 | 605 |
| PL32 | 189 |
| PL33 | 88 |
| PL34 | 95 |
| PL35 | 89 |
| PL4 | 1,254 |
| PL5 | 1,122 |
| PL6 | 1,235 |
| PL7 | 1,369 |
| PL8 | 361 |
| PL9 | 1,101 |
| PL95 | 50 |