| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Ołdaki, Mońki | 19-100 |
| Postal/ZIP Codes in Oliszki, Mońki | 19-100 |
| Postal/ZIP Codes in Potoczyzna, Mońki | 19-100 |
| Postal/ZIP Codes in Przytulanka, Mońki | 19-100 |
| Postal/ZIP Codes in Pyzy, Mońki | 19-100 |
| Postal/ZIP Codes in Rusaki, Mońki | 19-100 |
| Postal/ZIP Codes in Rybaki, Mońki | 19-100 |
| Postal/ZIP Codes in Sikory, Mońki | 19-100 |
| Postal/ZIP Codes in Sobieski, Mońki | 19-100 |
| Postal/ZIP Codes in Świerzbienie, Mońki | 19-100 |
| Postal/ZIP Codes in Waśki, Mońki | 19-100 |
| Postal/ZIP Codes in Wojszki, Mońki | 19-100 |
| Postal/ZIP Codes in Zalesie, Mońki | 19-100 |
| Postal/ZIP Codes in Zblutowo, Mońki | 19-100 |
| Postal/ZIP Codes in Znoski, Mońki | 19-100 |
| Postal/ZIP Codes in Żodzie, Mońki | 19-100 |
| Postal/ZIP Codes in Zyburty, Mońki | 19-100 |