All postcodes in RM20 3
| Postcode | Place | Type |
|---|---|---|
| RM20 3JF | West Thurrock | street |
| RM20 3JG | West Thurrock | street |
| RM20 3JH | West Thurrock | street |
| RM20 3JJ | West Thurrock | street |
| RM20 3JL | West Thurrock | street |
| RM20 3JP | West Thurrock | street |
| RM20 3JQ | West Thurrock | street |
| RM20 3JR | West Thurrock | street |
| RM20 3JS | West Thurrock | street |
| RM20 3JT | West Thurrock | street |
| RM20 3LD | West Thurrock | street |
| RM20 3LG | West Thurrock | street |
| RM20 3LH | West Thurrock | street |
| RM20 3LJ | West Thurrock | street |
| RM20 3LL | West Thurrock | street |
| RM20 3LP | West Thurrock | street |
| RM20 3LU | Purfleet-on-Thames | large user |
| RM20 3LX | West Thurrock | street |
| RM20 3NL | Purfleet-on-Thames | street |
| RM20 3NR | West Thurrock | street |
| RM20 3WD | West Thurrock | large user |
| RM20 3WE | West Thurrock | street |
| RM20 3WJ | West Thurrock | street |
| RM20 3WY | West Thurrock | large user |
| RM20 3WZ | West Thurrock | street |
| RM20 3XD | West Thurrock | street |
| RM20 3ZD | West Thurrock | street |
| RM20 3ZP | West Thurrock | large user |