Kalimpong I is Taluka (Tehsil) in Darjiling district of West Bengal state. Kalimpong I has 9 areas (postal offices).
| Pin code | Area | District | Taluka | Postal Status |
|---|---|---|---|---|
| 734301 | 7th Mile Kalimpong PIN Code | Darjiling | Kalimpong I | Sub Office |
| 734301 | Bankim Park PIN Code | Darjiling | Kalimpong I | Sub Office |
| 734301 | Bong Busty PIN Code | Darjiling | Kalimpong I | Sub Office |
| 734301 | Chibo Busty PIN Code | Darjiling | Kalimpong I | Branch Office |
| 734320 | Kalijhora PIN Code | Darjiling | Kalimpong I | Sub Office |
| 734301 | Kalimpong Bazar PIN Code | Darjiling | Kalimpong I | Sub Office |
| 734008 | Lohapool PIN Code | Darjiling | Kalimpong I | Branch Office |
| 734301 | Lolay PIN Code | Darjiling | Kalimpong I | Branch Office |
| 734316 | Rousay Bazar PIN Code | Darjiling | Kalimpong I | Branch Office |