| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Antonowo, Brok | 07-306 |
| Postal/ZIP Codes in Bojany, Brok | 07-306 |
| Postal/ZIP Codes in Brok, Brok | 07-306 |
| Postal/ZIP Codes in Kaczkowo Nowe, Brok | 07-306 |
| Postal/ZIP Codes in Kaczkowo Stare, Brok | 07-306 |
| Postal/ZIP Codes in Laskowizna, Brok | 07-306 |
| Postal/ZIP Codes in Nowe Kaczkowo, Brok | 07-306 |
| Postal/ZIP Codes in Puzdrowizna, Brok | 07-306 |
| Postal/ZIP Codes in Stare Kaczkowo, Brok | 07-306 |
| Postal/ZIP Codes in Żurawieniec, Brok | 07-306 |