| Area/District | Active Postcodes |
| SE1 | 3,661 |
| SE10 | 1,218 |
| SE11 | 875 |
| SE12 | 827 |
| SE13 | 1,192 |
| SE14 | 800 |
| SE15 | 2,095 |
| SE16 | 2,070 |
| SE17 | 1,158 |
| SE18 | 2,229 |
| SE19 | 1,053 |
| SE1P | 1,026 |
| SE2 | 653 |
| SE20 | 798 |
| SE21 | 522 |
| SE22 | 958 |
| SE23 | 1,056 |
| SE24 | 582 |
| SE25 | 1,082 |
| SE26 | 1,011 |
| SE27 | 700 |
| SE28 | 663 |
| SE3 | 1,324 |
| SE4 | 790 |
| SE5 | 1,517 |
| SE6 | 1,547 |
| SE7 | 696 |
| SE8 | 949 |
| SE9 | 1,721 |
| SE99 | 16 |