| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Aa, Sønderby | 5631 |
| Postal/ZIP Codes in Erdals Bakke, Sønderby | 5631 |
| Postal/ZIP Codes in Hagenskov, Sønderby | 5631 |
| Postal/ZIP Codes in Mosemarken, Sønderby | 5620, 5631 |
| Postal/ZIP Codes in Sønderby, Sønderby | 5631 |
| Postal/ZIP Codes in Sønderby Bj, Sønderby | 5631 |