Panchayat of Thaniyamangalam includes Thethampatti, Perumalpatti and Muthuramalingampatti. As per the 2001 census, Thaniyamangalam had a total population of 3,748 with 1,757 males and 1,991 females. The literacy rate was 75.81. Agriculture is the major occupation (Paddy, Sugarcane, Banana). Later they fell into the trend of going to Gulf countries to earn.
Sree Nanthi Perumal Kovil,Sree Ayyanaar Kovil and Sree Mangala Sundhari Amman Kovil adaikalamkatha amman temple are the temples of worship for the people living in the village. Apart from this there are temples of group and family worships too.
One of the greatest politicians and former State Minister Thiyagi Kakkan was living and he spent his whole life in the village.
The village has a Government Primary School, Government Higher Secondary School and few Nursery Schools providing education for the children from in and around the village. A Cooperative bank is providing banking in the village.