In the 2001 Indian census, Ilanji reported a population of 9,423. Males constituted 51% of the population and females 49%. Ilanji had an average literacy rate of 66%, higher than the national average of 59.5%. The male literacy was 75%, and female literacy was 57%. In 2001 in Ilanji, 10% of the population was under 6 years of age. By the 2011 census, 10,325 people were reported as living in Ilanji. It has the prestige of having 3 MLAs for Tenkasi assembly constituency and one district board president for the whole Tirunelveli district which comprised Tuticorin and Trinelveli districts put together at that time.
Geography
The word 'Ilanji' has a number of meanings including a water body. The village has three lakes very close to it. This is the only place which receives both south-west and north-east monsoon. Geographically, Ilanji is the centroid of a triangle whose three corners are the towns of Senkottai, Courtallam and Tenkasi, each of which is located approximately from Ilanji. As a result, some people call it "Triplet City" in Tirunelveli district. It is also bounded by two rivers, the Sitraru and the Kundaru. It's also said that at one point in time, a river flowed through the town.
Sites
ThiruvilanjiKumaran Koil, a beautiful temple for Lord Murugan overlooking fields and farms is the main temple of Ilanji. In addition the town boasts of other temples including Keela Koil, Pillayar Koil, Perumal Koil, Sri Krishnan Koil, Sitrattu Veerimman Koil and Kali Amman Kovil Temple.
Notable people
I.S Sethuramalingam Pillai, Late Headmaster, Ilanji Ramaswamy Pillai High School, was a recipient of the Tamil Nadu State Government's "Nalla Aasiriyar Virudhu". Eswara Konar is a farmer who was also well known for his rheumatoid arthritis treatment. Landlord P. Nallakannu chettiar is a prominent farmer who was well known for his agricultural activities and innovative cultivation of new crops. Other prominent natives include, Rao Bahadur I.C. Eswaran Pillai, I.K. Subramania Pillai, I.A. Chidambaram Pillai, I.A. Velayutham Pillai, who was the Chief Executive of Ilanji Bank which was later merged with Bank of Madura which is at present ICICI Bank, V. Subramanian who was the Executive of a nationalized bank was popularly known as VS in the banking sector, Dr.P.N.Muthiah, Dean, Madurai Kamaraj University,. Mrs. P. Rajalakshmi Pethraj, a retired school Head Master and her grandson C. Sathya Narayana Moorthi who was popular in the period of 2003 and 2004 for his poems. Dr.V. Gomatinayagam, Dean Annamalai University, Director of Distant Education, Annamalai University. Mr Thamburaj Pandian, who as the chief of the Senior Citizens' Forum, along with Sri V. Subramanian and Sri I.S. Deivengaperumal, has pioneered the meals programme which facilitates provision of ready-to-eat food at the doorsteps of many senior citizens in the area. He is the son-in-law of Sri. Durairaj Pandian, a legislator of the erstwhile Madras State. I.S. Akilandam Pillai started the Ramaswamy Pillai Higher Secondary School at Ilanji in the year 1916 as a primary school. I.S.AKILANDAM PILLAI was a pioneer in farming who developed mangoes by crafting & periodically wrote articles in INDIAN FARMING journal. He was well known for innovative farming.
Ilanji as said is the centroid of Tenkasi, Senkottai and Courtalam triangle, finds all the buses to stop. There are two stops namely Chowkai, West Ilanji bus stop which serve as the North and South extremes of the village.
Businesses
Timber
Pottery worlds
Agriculture
Miscellaneous
Ilanji is also famous for a sweet called "pozhi" which is prepared of dal, jaggery and is prepared without coconut.
