| Place | Post Code |
|---|---|
| Muthu Vinagarkuppam, Udayarpalayam | 621805 |
| Muthuservaimadam, Udayarpalayam | 612903 |
| Muthuservamadam, Udayarpalayam | 612903 |
| Muthuvancheri, Udayarpalayam | 621701 |
| Naduvalur, Udayarpalayam | 612904 |
| Naduvalur Rf, Udayarpalayam | 612904 |
| Nallanam, Udayarpalayam | 621804 |
| Nallankudikadu, Udayarpalayam | 612903 |
| Narasingampalayam, Udayarpalayam | 612903 |
| Nariyankuli, Udayarpalayam | 621701 |
| Nathaveli, Udayarpalayam | 621701 |
| Nayaganaipriyal Rf, Udayarpalayam | 621804 |
| Nayanganaipiriyal, Udayarpalayam | 621804 |
| North Patti, Udayarpalayam | 621710 |
| Odapperi, Udayarpalayam | 612903 |
| Odeppery, Udayarpalayam | 612903 |
| Okkanatham, Udayarpalayam | 621804 |
| Olaiyur, Udayarpalayam | 608901 |
| All postal codes in Ariyalur | |
|---|---|
| Ariyalur, Ariyalur | |
| Sendurai, Ariyalur | |
| Udayarpalayam, Ariyalur | |