Arumanai is a panchayat town in the Kannyakumari district in the state of Tamil Nadu, which forms a part of the Indian subcontinent. According to the census of 2001, the town of Arumanai had a population of 14,576. The average literacy rate of this town is 78%, which is much higher than that of the national literacy rate. Arumanai is now regarded by the state of Tamil Nadu as a first grade panchayat town. This town is well known by the fact that the largest river of the Kannyakumari district, the Kodayar River flows along the northeastern and eastern boundaries of the town. Besides the River Kodayar, two small brooks, namely the Kandasankavadu and the Poovampara brook which are also regarded as the tributaries of Kodayar, flows through this popular town. The district of Kannyakumari has two taluks namely Vilavancode taluk and Kalkulam taluk. The town of Arumanai falls in the former district.

Gardening is a big passion of the locals of this town. The surroundings of this panchayat town are very fertile and more or less all species of flora of the West Coast blooms here. Commercial varieties of flora and fauna are also available here. Nature with several hills and mountains with rich herbs of medicinal value endow this town. A change has been marked in the utilization of the cultivable lands in this town in the era of 1950s due to the introduction of rubber cultivation in the hilly and semi-hilly areas of this district. The cultivation of the rubber, which is also regarded as the main agricultural crop can be seen in this two taluks of this district. Since Arumanai is very close to the foothills of the Western Ghats, all the lands that are available here are used for the cultivation of rubber.

Rice is the staple food of the people of this region, though for some inhabitants of the hilly areas, the main food is Tapioca. The Ayyavazhi festival is celebrated with much vigor and enthusiasm in this town. There are also two hydroelectric power stations at Kodayar. Reaching this town is also not much of a hassle as it is well connected with all the major destination of the country. Nagercoil in the Kannyakumari district is the nearest railway junction connecting the eastern and western rail-lines.