Katwa I is Taluka (Tehsil) in Bardhaman district of West Bengal state. Katwa I has 7 areas (postal offices).
| Pin code | Area | District | Taluka | Postal Status |
|---|---|---|---|---|
| 713130 | Atuhatpara PIN Code | Bardhaman | Katwa I | Sub Office |
| 713150 | Bandhmura PIN Code | Bardhaman | Katwa I | Branch Office |
| 713502 | Bera PIN Code | Bardhaman | Katwa I | Branch Office |
| 713502 | Karajgram PIN Code | Bardhaman | Katwa I | Branch Office |
| 713130 | Katwa Bazar PIN Code | Bardhaman | Katwa I | Sub Office |
| 713130 | Katwa College PIN Code | Bardhaman | Katwa I | Sub Office |
| 713130 | Katwa Station Bazar PIN Code | Bardhaman | Katwa I | Sub Office |