| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Aiud, Aiud | 515200 |
| Postal/ZIP Codes in Aiudul de Sus, Aiud | 515201 |
| Postal/ZIP Codes in Ciumbrud, Aiud | 515202 |
| Postal/ZIP Codes in Gâmbaş, Aiud | 515203 |
| Postal/ZIP Codes in Gârbova de Jos, Aiud | 515204 |
| Postal/ZIP Codes in Gârbova de Sus, Aiud | 515205 |
| Postal/ZIP Codes in Gârboviţa, Aiud | 515206 |
| Postal/ZIP Codes in Măgina, Aiud | 515207 |
| Postal/ZIP Codes in Păgida, Aiud | 515208 |
| Postal/ZIP Codes in Sâncrai, Aiud | 515209 |
| Postal/ZIP Codes in Ţifra, Aiud | 515210 |