| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Bischofegg, Seiersberg-Pirka | 8144 |
| Postal/ZIP Codes in Neupirka, Seiersberg-Pirka | 8054, 8073 |
| Postal/ZIP Codes in Neuwindorf, Seiersberg-Pirka | 8073 |
| Postal/ZIP Codes in Pirka, Seiersberg-Pirka | 8054 |
| Postal/ZIP Codes in Seiersberg, Seiersberg-Pirka | 8054, 8055, 8073, 8144 |
| Postal/ZIP Codes in Windorf, Seiersberg-Pirka | 8054 |