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685509 PINCode is located in Idukki district
| Post Offices with the same pin code as Periyar lake | |||
| No. | Post Office | District | Pincode |
| 1 | Amaravathy | Idukki | 685509 |
| 2 | Attapallam | Idukki | 685509 |
| 3 | Chakkupallam | Idukki | 685509 |
| 4 | Kumily | Idukki | 685509 |
| 5 | Springvalley | Idukki | 685509 |
| 6 | Thekkady | Idukki | 685509 |