# CM21

3 sectors, 320 postcodes

- **Part of:** [CM](https://openpostcodes.uk/CM)
- **Local authorities:** East Hertfordshire, Epping Forest

## Sectors

| Sector | Postcodes | Local authority |
|---|---|---|
| [CM21 0](https://openpostcodes.uk/CM21%200) | 136 | East Hertfordshire |
| [CM21 1](https://openpostcodes.uk/CM21%201) | 9 | Epping Forest |
| [CM21 9](https://openpostcodes.uk/CM21%209) | 175 | East Hertfordshire |