Thottakadu SO is the primary post office registered under PIN code 686539 in Kottayam, Kerala. This code sits within the Southern Postal Region, with 4 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Thottakadu SO | SO | Sub Post Office |
| Eravuchira BO | BO | Branch Post Office |
| Thottackad West BO | BO | Branch Post Office |
| Umbidi BO | BO | Branch Post Office |
