Post Offices
- Akkaraivattam B.O — 609604
- Ambagarathur S.O — 609601
- Dharmapuram B.O — 609602
- Karaikal Bazaar S.O — 609602
- Karaikal S.O — 609602
- Karaikal South S.O — 609602
- Karaikalmedu B.O — 609605
- Karaikoilpathu B.O — 609605
- Karukkangudi B.O — 609607
- Kottuchery S.O — 609609
- Kurumbagaram B.O — 609603
- Madagadi B.O — 609602
- Melakasakudi B.O — 609603
- Nallambal B.O — 609601
- Nallathur B.O — 609603
- Nedungadu S.O — 609603
- Neravy S.O — 609604
- Seithur B.O — 609601
- Sellur B.O — 609607
- Surakudi B.O — 609607
- T.R.Pattinam South B.O — 609606
- Thalatheru S.O — 609605
- Tirumalairayanpattinam S.O — 609606
- Tirunallar S.O — 609607
- Tiruvettakudi B.O — 609609
- Varichikudi B.O — 609609
- Vizhithiyur B.O — 609607
