# SY21

5 sectors, 871 postcodes

- **Part of:** [SY](https://openpostcodes.uk/SY)
- **Local authorities:** Powys, Shropshire

## Sectors

| Sector | Postcodes | Local authority |
|---|---|---|
| [SY21 0](https://openpostcodes.uk/SY21%200) | 200 | Powys |
| [SY21 1](https://openpostcodes.uk/SY21%201) | 1 | Powys |
| [SY21 7](https://openpostcodes.uk/SY21%207) | 252 | Powys |
| [SY21 8](https://openpostcodes.uk/SY21%208) | 242 | Powys |
| [SY21 9](https://openpostcodes.uk/SY21%209) | 176 | Powys |