# WD

12 districts, 7,416 postcodes

- **Local authorities:** Watford, Hertsmere, Three Rivers, Dacorum, St Albans, Buckinghamshire, Hillingdon, Harrow, Barnet

## Districts

| District | Postcodes | Local authority |
|---|---|---|
| [WD17](https://openpostcodes.uk/WD17) | 571 | Watford |
| [WD18](https://openpostcodes.uk/WD18) | 719 | Watford |
| [WD19](https://openpostcodes.uk/WD19) | 692 | Three Rivers |
| [WD23](https://openpostcodes.uk/WD23) | 774 | Hertsmere |
| [WD24](https://openpostcodes.uk/WD24) | 533 | Watford |
| [WD25](https://openpostcodes.uk/WD25) | 687 | Watford |
| [WD3](https://openpostcodes.uk/WD3) | 1280 | Three Rivers |
| [WD4](https://openpostcodes.uk/WD4) | 372 | Dacorum |
| [WD5](https://openpostcodes.uk/WD5) | 261 | Three Rivers |
| [WD6](https://openpostcodes.uk/WD6) | 1076 | Hertsmere |
| [WD7](https://openpostcodes.uk/WD7) | 430 | Hertsmere |
| [WD99](https://openpostcodes.uk/WD99) | 21 | Watford |