All postcodes in IP19 1
| Postcode | Place | Type |
|---|---|---|
| IP19 1AL | Halesworth | large user |
| IP19 1AU | Halesworth | large user |
| IP19 1AW | Halesworth | large user |
| IP19 1BA | Halesworth | large user |
| IP19 1BE | Halesworth | large user |
| IP19 1BF | Halesworth | large user |
| IP19 1BJ | Halesworth | large user |