| Place | Postal Code |
|---|---|
| Karainagar Centre, Karainagar | None |
| Karainagar East, Karainagar | None |
| Karainagar North, Karainagar | None |
| Karainagar North East, Karainagar | None |
| Karainagar North West, Karainagar | None |
| Karainagar South, Karainagar | None |
| Karainagar South East, Karainagar | None |
| Karainagar South West, Karainagar | None |
| Karainagar West, Karainagar | None |