Olagapuram is a village in Vanur tehsil in district of Viluppuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Olagapuram was 2,481 which includes 1,265 males and 1,216 females. Olagapuram covers 917.84 ha area. Pincode of Olagapuram is 604154.