# CM

28 districts, 18,628 postcodes

- **Local authorities:** Chelmsford, Braintree, Brentwood, Maldon, Uttlesford, Harlow, East Hertfordshire, Epping Forest, Basildon, Colchester, Thurrock, Havering

## Districts

| District | Postcodes | Local authority |
|---|---|---|
| [CM0](https://openpostcodes.uk/CM0) | 561 | Maldon |
| [CM1](https://openpostcodes.uk/CM1) | 1558 | Chelmsford |
| [CM11](https://openpostcodes.uk/CM11) | 450 | Basildon |
| [CM12](https://openpostcodes.uk/CM12) | 508 | Basildon |
| [CM13](https://openpostcodes.uk/CM13) | 701 | Brentwood |
| [CM14](https://openpostcodes.uk/CM14) | 618 | Brentwood |
| [CM15](https://openpostcodes.uk/CM15) | 596 | Brentwood |
| [CM16](https://openpostcodes.uk/CM16) | 639 | Epping Forest |
| [CM17](https://openpostcodes.uk/CM17) | 530 | Harlow |
| [CM18](https://openpostcodes.uk/CM18) | 431 | Harlow |
| [CM19](https://openpostcodes.uk/CM19) | 394 | Harlow |
| [CM2](https://openpostcodes.uk/CM2) | 1313 | Chelmsford |
| [CM20](https://openpostcodes.uk/CM20) | 632 | Harlow |
| [CM21](https://openpostcodes.uk/CM21) | 320 | East Hertfordshire |
| [CM22](https://openpostcodes.uk/CM22) | 555 | Uttlesford |
| [CM23](https://openpostcodes.uk/CM23) | 1193 | East Hertfordshire |
| [CM24](https://openpostcodes.uk/CM24) | 274 | Uttlesford |
| [CM3](https://openpostcodes.uk/CM3) | 1589 | Chelmsford |
| [CM4](https://openpostcodes.uk/CM4) | 442 | Brentwood |
| [CM5](https://openpostcodes.uk/CM5) | 449 | Epping Forest |
| [CM6](https://openpostcodes.uk/CM6) | 987 | Uttlesford |
| [CM7](https://openpostcodes.uk/CM7) | 1345 | Braintree |
| [CM77](https://openpostcodes.uk/CM77) | 461 | Braintree |
| [CM8](https://openpostcodes.uk/CM8) | 920 | Braintree |
| [CM9](https://openpostcodes.uk/CM9) | 1055 | Maldon |
| [CM92](https://openpostcodes.uk/CM92) | 18 | Harlow |
| [CM98](https://openpostcodes.uk/CM98) | 19 | Chelmsford |
| [CM99](https://openpostcodes.uk/CM99) | 70 | Chelmsford |