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686693 PINCode is located in Ernakulam district
| Post Offices with the same pin code as Oonnukal | |||
| No. | Post Office | District | Pincode |
| 1 | Manikinar | Ernakulam | 686693 |
| 2 | Neendapara | Ernakulam | 686693 |
| 3 | Nellimattam | Ernakulam | 686693 |
| 4 | Neriamangalam | Ernakulam | 686693 |
| 5 | Pareekanni | Ernakulam | 686693 |
| 6 | Perumannoor(kgm) | Ernakulam | 686693 |
| 7 | Thalakode | Ernakulam | 686693 |