# HP23

4 sectors, 576 postcodes

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

## Sectors

| Sector | Postcodes | Local authority |
|---|---|---|
| [HP23 4](https://openpostcodes.uk/HP23%204) | 202 | Dacorum |
| [HP23 5](https://openpostcodes.uk/HP23%205) | 204 | Dacorum |
| [HP23 6](https://openpostcodes.uk/HP23%206) | 162 | Dacorum |
| [HP23 9](https://openpostcodes.uk/HP23%209) | 8 | Dacorum |