# HP1

4 sectors, 686 postcodes

- **Part of:** [HP](https://openpostcodes.uk/HP)
- **Local authorities:** Dacorum

## Sectors

| Sector | Postcodes | Local authority |
|---|---|---|
| [HP1 1](https://openpostcodes.uk/HP1%201) | 235 | Dacorum |
| [HP1 2](https://openpostcodes.uk/HP1%202) | 207 | Dacorum |
| [HP1 3](https://openpostcodes.uk/HP1%203) | 200 | Dacorum |
| [HP1 9](https://openpostcodes.uk/HP1%209) | 44 | Dacorum |