In Thane district, Maharashtra, PIN code 421301 is anchored by Kalyan Rs S.O, a Sub Post Office. Mail addressed to this code is sorted through the Western Postal Region, across 5 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Kalyan Rs S.O | SO | Sub Post Office |
| Kalyan D.C. S.O | SO | Sub Post Office |
| Pimpaloli B.O | BO | Branch Post Office |
| Subhash Road S.O (Thane) | OTHER | post office |
| Kalyan City H.O | HO | Head Post Office |
