Thatchur is a village in Arani tehsil in district of Tiruvannamalai, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Thatchur was 4,514 which includes 2,271 males and 2,243 females. Thatchur covers 1417.25 ha area. Pincode of Thatchur is 632326.