| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Budachów, Bytnica | 66-630 |
| Postal/ZIP Codes in Budachów-Kolonia, Bytnica | 66-630 |
| Postal/ZIP Codes in Bytnica, Bytnica | 66-630 |
| Postal/ZIP Codes in Dobrosułów, Bytnica | 66-630 |
| Postal/ZIP Codes in Drzewica, Bytnica | 66-630 |
| Postal/ZIP Codes in Garbowo, Bytnica | 66-630 |
| Postal/ZIP Codes in Głębokie, Bytnica | 66-630 |
| Postal/ZIP Codes in Grabin, Bytnica | 66-630, 66-600 |
| Postal/ZIP Codes in Gryżyna, Bytnica | 66-630 |
| Postal/ZIP Codes in Kępiny, Bytnica | 66-630 |
| Postal/ZIP Codes in Łasiczyn, Bytnica | 66-630 |
| Postal/ZIP Codes in Pliszka, Bytnica | 66-630 |
| Postal/ZIP Codes in Smolary Bytnickie, Bytnica | 66-630 |
| Postal/ZIP Codes in Struga, Bytnica | 66-630 |
| Postal/ZIP Codes in Szklarka, Bytnica | 66-630 |