Lalgudi is Taluka (Tehsil) in Ariyalur district of Tamil Nadu state. Lalgudi has 15 areas (postal offices).
| Pin code | Area | District | Taluka | Postal Status |
|---|---|---|---|---|
| 621715 | Alagiamanavalam PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621218 | Edayathimangalam PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621715 | Elakurichi PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621851 | Ilandaikudam PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621715 | Kamarasavalli PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621851 | Kandirathitham PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621715 | Kilakavattankurichi PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621715 | Kilakolathur PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621851 | Koilesanai PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621715 | Kuruvadi PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621653 | Poondi PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621715 | Sullangudi PIN Code | Ariyalur | Lalgudi | Branch Office |
| 621851 | Thirumazhapadi PIN Code | Ariyalur | Lalgudi | Sub Office |
| 621715 | Tirumanur PIN Code | Ariyalur | Lalgudi | Sub Office |
| 621851 | Venganur PIN Code | Ariyalur | Lalgudi | Branch Office |