All postcodes in CO13 3
| Postcode | Place | Type |
|---|---|---|
| CO13 3AN | Frinton-on-Sea | large user |
| CO13 3AY | Frinton-on-Sea | large user |
| CO13 3BA | Frinton-on-Sea | large user |
| CO13 3BD | Frinton-on-Sea | large user |
| CO13 3BE | Frinton-on-Sea | large user |
| CO13 3BH | Frinton-on-Sea | large user |
| CO13 3BL | Frinton-on-Sea | large user |
| CO13 3BP | Frinton-on-Sea | large user |
| CO13 3BT | Frinton-on-Sea | large user |
| CO13 3DB | Frinton-on-Sea | large user |
| CO13 3DG | Frinton-on-Sea | large user |
| CO13 3DH | — | large user |