# CM23

7 sectors, 1,193 postcodes

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

## Sectors

| Sector | Postcodes | Local authority |
|---|---|---|
| [CM23 0](https://openpostcodes.uk/CM23%200) | 36 | East Hertfordshire |
| [CM23 1](https://openpostcodes.uk/CM23%201) | 136 | Uttlesford |
| [CM23 2](https://openpostcodes.uk/CM23%202) | 300 | East Hertfordshire |
| [CM23 3](https://openpostcodes.uk/CM23%203) | 265 | East Hertfordshire |
| [CM23 4](https://openpostcodes.uk/CM23%204) | 231 | East Hertfordshire |
| [CM23 5](https://openpostcodes.uk/CM23%205) | 203 | East Hertfordshire |
| [CM23 9](https://openpostcodes.uk/CM23%209) | 22 | East Hertfordshire |