# CB21

3 sectors, 446 postcodes

- **Part of:** [CB](https://openpostcodes.uk/CB)
- **Local authorities:** South Cambridgeshire, Uttlesford, Cambridge

## Sectors

| Sector | Postcodes | Local authority |
|---|---|---|
| [CB21 4](https://openpostcodes.uk/CB21%204) | 240 | South Cambridgeshire |
| [CB21 5](https://openpostcodes.uk/CB21%205) | 149 | South Cambridgeshire |
| [CB21 6](https://openpostcodes.uk/CB21%206) | 57 | South Cambridgeshire |