| Place | Post Code |
|---|---|
| Antonowo, Brok | 07-306 |
| Bojany, Brok | 07-306 |
| Brok, Brok | 07-306 |
| Kaczkowo Nowe, Brok | 07-306 |
| Kaczkowo Stare, Brok | 07-306 |
| Laskowizna, Brok | 07-306 |
| Nowe Kaczkowo, Brok | 07-306 |
| Puzdrowizna, Brok | 07-306 |
| Stare Kaczkowo, Brok | 07-306 |
| Żurawieniec, Brok | 07-306 |